Unaccustomed Earth

The title story of the book is about the family relationships between three generations: the father, his daughter, Ruma, and her son, Akash. The father, a retiree and recent widower, visits his daughter's new home in the suburbs of Seattle. Ruma has left her successful legal career to raise children, and her husband works hard to support the family. Although more traditional her father tries to persuade her to continue her legal career while being a mother. The father was somewhat unhappy with his once-traditional lifestyle and is enjoying his newly found independence in his travels and a relationship with a new female friend. The father and the daughter have limited communication, both afraid to acknowledge they have moved away from their Bengali culture and have embraced aspects of the American culture. Akash, the grandson, is completely immersed in American culture but becomes fascinated by his grandfather's habits, such as his language, that are foreign to him.

The story explores gender roles in America and family issues associated with Ruma's Bengali heritage, including her sense of obligation to care for her father and have him live with her and her immediate family. Also present is the dilemma of coming between another person's happiness, a situation Ruma encounters when she learns of her father's love interest.

Pranab Chakraborty, a graduate student at MIT, is contemplating returning to Calcutta due to homesickness. On the streets of Boston he sees a little girl, Usha, and her traditional Bengali mother Aparna. He follows them and ends up befriending them. Aparna, herself homesick and lonely, empathizes with Pranab and is happy to feed him. Pranab Kaku ("Uncle Pranab") becomes a regular visitor at their house and calls Aparna as "Boudi" (meaning "elder brother's wife"). Over time Aparna looks forward eagerly to Pranab's visits and develops a unique kind of love towards him. Adding to the situation is Usha's father's (Shyamal da) aloof and detached attitude towards her mother. Aparna's love for Pranab turns into jealousy when Pranab brings home an American woman, Deborah, whom he eventually marries. Aparna continuously blames and criticizes Deborah, stating that it is just a matter of time before Deborah leaves Pranab. After twenty-three years Deborah and Pranab finally divorce. The story also recounts the unique mother-daughter relationship that develops between Aparna and Usha; after many struggles and squabbles, Aparna placates her daughter by relating her own experiences about a foolish decision that she would have made.

The title is drawn from this passage in the story: "'He used to be so different. I don’t understand how a person can change so suddenly. It's just hell-heaven, the difference,' she would say, always using the English words for her self-concocted, backward metaphor."

Amit and his wife Megan travel to his high school alma mater Langford for Pam's wedding. Pam, the daughter of the headmaster of Langford, and Amit were close despite never having a formal relationship with each other. Both Amit and Megan are insecure the night of the wedding; Amit mainly for mistaking his former classmate "Ted" for "Tim," and Megan mainly because there is a small burn on her skirt. After consuming two spiked punches, he is completely drunk; he admits to a guest nearby that he feels detached from Megan. He later remembers that he has to call Megan's in-laws to check-in on their daughters. Since reception for cell phones is poor at Langford, he returns to the hotel to use their room's landline but before he is able to remember the number, he crashes.

Amit wakes up, shocked to learn that it is late the next morning. Megan, sitting outside on the balcony, expresses her discontent. Remembering that Pam mentioned a brunch, they head back to Langford. They find out that the brunch ended an hour ago. Despite this, they roam Langford together and when they arrive at one of the dorms, Megan asks about Amit sexual past and even suspects that he slept with Pam. He denies this, and they ultimately have sex in the dorm.

Sudha, while visiting home in Wayland from Penn for Christmas, agrees with her teen-aged brother, Rahul, to sneak beer into their parents' house. He agrees, and even purchases vodka, too. The following summer, they see each other again, and it is revealed that Rahul first term grades at Cornell are dramatically lower than his high school grades, which causes concern to their parents. He is also arrested for possession of alcohol while driving. Meanwhile, Sudha has been accepted into the London School of Economics. A few years go by; Rahul drops out and Sudha becomes engaged to Roger, a Brit, a decision that their parents approve of highly. Rahul lives with their parents, working a menial job.

Shortly before Sudha's wedding, Rahul announces that he is engaged to a woman named Elena. This causes a rift in their family. Further, at the wedding, Rahul's alcoholism becomes apparent to everyone when he fights with their father over the microphone while he is toasting. This causes Rahul to become disconnected with the family for a few years. Meanwhile, Sudha, while living in London, gives birth to a boy, Neel. She responds to Rahul, who originally gave notice that he is coming to London to visit them. Rahul acts as a responsible uncle to Neel; he reveals that he has given up alcohol and takes care of Elena's daughter Crystal, although they have yet to marry. He becomes close with Neel. One day near the end of his visit, he suggests that Sudha and Roger go out for a movie and leave him at the apartment with Neel. Skeptical, they agree given that Rahul has been exemplary during his time in London. Sudha and Roger return to find Rahul passed out and Neel in the bath, which causes a quarrel between Sudha and Roger. Rahul awakens and learns that he somehow, against all of his willpower, consumed some alcohol. He leaves, realizing that he has lost Sudha's trust forever. At the same time, Sudha feels partly responsible for her naive actions many years before.

Sang, short for Sangeeta, receives calls from suitors often, which alarms her housemates, Paul and Heather. However, Sang rejects all of them as she is in a relationship with Farouk, an Egyptian man. During the fall, this relationship becomes muddled. While Sang is in London and Heather is out on a skiing trip in the winter, Paul receives a call from a woman identifying herself as Deirdre. Deirdre obsessively calls the house and Paul learns that she is a lover of Farouk currently in Vancouver; he decides to not tell this to Sang when she returns. Over a few months, Sang learns that Deirdre called and when Paul tells Sang what happened, she calls him a liar. Paul, disgusted at being scapegoated, ruses Deirdre into telling Sang what happened during the winter over the phone. Sang forgives Paul, and asks him to drive her to Farouk apartment. He does so and they confront Farouk together. When Farouk begins pushing Paul, the two men fight. Farouk is able to escape despite Paul overpowering him. The police arrive to calm the three. Sang, distraught, returns to London.

Shortly after the incident, while in Boston, Paul sees Farouk with a woman. Paul plans to walk past them unnoticed but Farouk sees him and confronts him. After a peaceful exchange, Farouk walks away with the woman. Paul notices that the woman has a dog, and also remembers that when Deirdre called him, there were intermittent barks in the background.

This section deals mostly with their childhood and is written in a first person address from Hema to Kaushik. It tells the story of two families who were close to each other because of shared culture and the common experience of adapting to a new culture, but who are beginning to drift apart due to reasons which become evident as the story progresses.

This part is from Kaushik's point of view and tells about his life after his mother's death as he deals with unwanted change and navigates complicated relationships with his recently remarried father, stepmother, and two young stepsisters—a situation that will ultimately influence Kaushik to lead the life of a wanderer.

The last part is related by an omniscient narrator as Hema and Kaushik meet by chance in Italy after two long decades. Hema, now a college professor, is tormented about her previous affair with a married man and plans to settle down by marrying Navin, someone she barely knows. Kaushik, a world traveling, successful photojournalist, is preparing to accept a desk job in Hong Kong. In spite of all that, they find their deep connection irresistible. They coincidentally reunite in Rome and relive their younger years together, exploring Italy together. Before leaving for a Christmas vacation, Kaushik asks Hema to leave Navin and come and live with him in Hong Kong. He tells her to brood about it while she is in Calcutta.

Kaushik ultimately dies vacationing in Khao Lak when the 2004 tsunami occurs, never giving Hema a choice regarding their future together.