The film focusses on a family living in Hyderabad whose head is Ram Murthy (Nagineedu), a retired head master. He is a disciplined person and always tries to make his relatives behave in the same way. To avoid bad remarks from the society about his family, he sets up a family constitution of discipline. His mania for discipline is such big that if any one of his family members commit 100 Mistakes, that person would be banished from the family and that mistake can be anything which Ram Murthy hates which ironically includes laughing out loudly. Thus all of the family members maintain a disciplinary life to avoid being banished from the house. In detail, the family consists of Ram Murthy's wife Seetha, an Asthma patient; his daughter Kasthuri, his son in law Anand and their kids. Apart from them are Ram Murthy's two sons Brahmaji (Brahmaji) and Sundeep (Sundeep Kishan). Since Ram Murthy's brother Subrahmanyam (Prithviraj (Telugu actor)) was alleged to be committed 100 Mistakes though he didn't, he is sent away from home. While all of the family members commit mistakes less than 20, Sundeep commits 99 Mistakes and one more, he is out of the family. So to avoid that Sundeep starts leading a careful life. Brahmaji's marriage is scheduled at Tirupati (city) and the whole family boards Venkatadri Express at Kacheguda. Sundeep's mother forgot the Mangala sutra at the house and Sundeep goes away to bring it back. Moreover, to his convenience, Sundeep is in S4 while others are in S3. So Sundeep goes outside the station and waits for an Auto-Rickshaw, But none accepts to go to his area. Meanwhile, a miser techie Prarthana (Rakul Preet Singh) reaches Kachiguda railway station to board the Venkatadri Express and the Auto-Rickshaw driver goes to bring the change in order to pay her off the balance amount after receiving the fare. Sundeep gets into the vehicle and goes to his home. He breaks the house's lock with a stone as he has no keys to open it. He takes the Mangala sutra and