In 1944, Dr. Roy Jamnadas (Murali Sharma), who is working on the theory of nature vs nurture, separates two sets of identical twins he finds at the doorstep of the orphanage he runs and gives them up for adoption to two different families, based in two different cities. One pair is given to a couple in Ooty and the other pair to a couple in Bangalore, and both the couples name them Roy and Joy, after Dr. Roy and his own adoptive brother Joy. Roy 1 (Ranveer Singh) and Joy 1 (Varun Sharma)’s father runs a circus and after his death, they both take up the responsibility of running the circus. Roy 2 and Joy 2’s father is a rich industrialist. Roy 1 has a strange connection with electricity and electric currents do not affect him. He uses this ability to show tricks at the circus and becomes famously known as ‘Electric Man’. Elsewhere, Roy 2 receives electric shocks whenever Roy 1 comes into contact with electricity.
The story then moves forward 30 years. Roy 1’s wife, Mala (Pooja Hegde), cannot conceive and wishes to adopt a child from the Jamnadas Orphanage, but Roy 1 is against the idea. Roy 2 is in love with Bindu but her father Rai Bahadur is sceptical about him as he had seen Roy 1 with Mala in Ooty and had mistaken him for Roy 2, thinking that he is cheating on Bindu. Roy 2 and Joy 2 come to Ooty to buy a tea estate and there is a lot of confusion and misunderstanding as people mistake them for the other pair of twins. Three robbers – Momo, Mango and Chikki are after them to rob their money. They back off when Roy 2 gives them electric shocks and their boss, Polson Dada later comes to take revenge. They also come across Nagmani, the shady cab driver and Bagheera, the dacoit turned hotel owner. Roy 2 thinks they are all part of a huge criminal gang who want to rob them, and when they happen to come across Mala, they think that she is the leader of the gang.
