Yeh Un Dinon Ki Baat Hai

The story is set in 1990's Ahmedabad, Gujarat. Naina Aggarwal is a 16-years-old studious girl who studies at Pragati Vidya Ka Mandir. She lost her mother and lives in a joint family with her father Rakesh, elder brother Arjun, elder uncle and aunt Naresh and Beena, their son Pralay, her younger uncle and aunt Anand and Bela, their daughters Preeti and Pooja.

Sameer Maheshwari is a 17-years-old hosteler who lives in Nainital. Due to his mischievous behaviour, he is suspended from his school and returns to his maternal grandfather in Ahmedabad. He had lost his father. His mother, Vishakha gets married to Vivek Somani, who hates Sameer. He is closest to his grandfather. Sameer joins Naina's school, where both of them meet for the first time and Naina instantly falls for him. Sameer is her classmate.

Although Naina has a soft corner for Sameer, she had to stand against him in various circumstances, because she was the Head Discipline Monitor of her school. Naina's father who is the librarian of that school also stands against Sameer, and insults him. An enraged Sameer decides to take revenge on Naina, by engaging in a bet to his seniors, wherein Sameer has to make Naina say "I Love You" and hug him. Sameer starts wooing Naina.

After a few months, the school decides to go on a trip to Mount Abu. Sameer and his friends Munna and Pandit decide to complete their bet during the trip. During their trip, Sameer realises that Naina is a very caring and good at heart. Though Sameer has a soft corner for Naina, he never realises that he has already fallen for her. On the last day of their trip, Naina finally confesses her feelings. She soon comes to know of the bet and is completely dejected and heartbroken.

After a few days, Sameer finally realises his feelings for Naina; he tells his friends about this. Sameer is now clueless what to do now, as Naina hates him now. Meanwhile, Arjun gets to know about the bet. Enraged, he confronts Sameer and Sameer pushes Arjun, and the latter breaks his leg. This causes the growth of hatred in Naina and Rakesh. As a punishment, Sameer is asked to serve Arjun until he recovers. During this time, Pooja's marriage is fixed. Sameer apologizes to Naina who finally forgives him and start their relationship.

Sameer's grandfather passes away. He soon shifts to Delhi, which Naina comes to know days later. They both communicate through phones and letters. This makes their relationship more stronger.

Sameer returns to Ahmedabad after a year. The Naina, Sameer and their friends enroll to VJN College. In the college too, they face too many problems due to their nemesises, but their love gets stronger day by day. Naina also breaks up with Sameer due to Arjun-Shefali's relationship to be exposed to their families.

One day, Beena fixes Naina's marriage to an arrogant CA Sharad. The alliance soon breaks because of Sharad's violent behaviour towards Anand and also slapping Naina in front of the college. During this time, Anand gets to know about Sameer and Naina's relationship and he approves,because of Sameer's true love. Anand also promises to conduct their marriage.

After a lot of trials and tribulations, family clashes, the couple finally get married. Sameer had built a huge bungalow for Naina with the money Nanu gave him. In the meantime, Swati marries a businessman, Preeti marries Shubham, Munna marries Rewa and Arjun marries Juhi.

Sameer's Mamaji and his son's keeps an eye on Sameer's grandfather's factory and business. To kick out Sameer from the business, they insult him in various ways. Enraged Sameer returns home. Hot-headed, he and Naina have a major fight, the latter knowing nothing about what happened in the factory. Both of them slap each other and Naina returns to her home. She soon gets to know the incident and goes to meet Sameer; she meets with an accident. This reunites the couple.

Sameer and Naina start their own business, called 'Samaina boutique' but which doesn't go very well. Sameer gets to act in an advertisement, where he realizes his acting potential. They decide to travel to Mumbai for an acting career.They decide to sell their house. They also consummate their marriage.

The couple travel to Mumbai with Rakesh. Naina soon finds a job as a writer, but due to her boss's negative attitude, she resigns. Sameer gets his first acting venture in a pressure cooker advertisement but struggles to find a permanent job. He decides to support his wife with writing. They present their first story to Aruna Irani. She accepts their story and telecast their serial.

Finally, Naina and Preeti are pregnant. Naina delivers a baby girl when Preeti delivers a baby boy. Sameer and Naina name their child as Suman Maheshwari. After the birth of their child, they buy their rented house in Mumbai. Sameer also buys his Ahmedabad bungalow which he sold while traveling to Mumbai. After 2 years, they return to Ahmedabad and reconcile with their family members, who turned foes during their marriage.

Naina, Sameer, Munna, Swati, Pandit, Preeti, Hema and Kamya reunite at their school's 50th anniversary. Sameer and Naina reminiscence their old days. The couple lives happily ever after. The story ends happily in 1998.

The opening theme of Yeh Un Dinon Ki Baat Hai is composed by Anu Malik. The lyrics are written by Sanjay Chhel, and it comprises the voices of legendary singers Kumar Sanu and Sadhana Sargam. The song has been praised for its melodious lyrics, which refresh the happenings in the 1990s.[12][13]

It has been dubbed in Tamil language as Ninaithale Inikum on Polimer TV.[14][15]

It also has been dubbed in Sinhala language as Season Ticket on Hiru TV from 29 July 2019 to 17 December 2020.[16]

It was particularly hailed for its fresh outlook and for bringing out the nostalgia and the flavours of the 90s.[17] It topped Sony TV shows by gaining a TRP of 1.5 in its first week.[6][18]

The Times of India hailed it as one of the best TV shows launched in 2017 and praised the performances of newcomers Ashi Singh and Randeep Rai.[7]

The UK's weekly Asian newspaper Eastern Eye praised the creative team of the show for leaving no stone unturned to recreate the city of Ahmedabad from an earlier era, calling it a tribute to the city.[19]

This show has also earned compliments from various television and film actors.[20]

• List of programs broadcast by Sony Entertainment Television

• Yeh Un Dinon Ki Baat Hai at IMDb
• Yeh Un Dinon Ki Baat Hai on Sony LIV
• Official website on SET India