In the year 2065, a scientist (Arya) invents a time machine. To prove its capability, he sends it back in time to 2015, programming it to return within forty seconds. However, the machine does not return.
The time machine is seen by three people in 2015 — Elango (Vishnu), a budding entrepreneur whose ideas are rejected by all and who is struggling to maintain his relationship with his rich girlfriend Anu (Miya), who is embarrassed at the fact that Elango is unemployed; Elango’s best friend Pulivetti Arumugam (Karunakaran), a fake astrologer; and an inventor Giridhara Parthasarathy (T. M. Karthik), who makes a living by repairing home appliances. The three of them are involved in an accident and witness the time machine while recovering from the shock. While Parthasarathy decides to keep the time machine for himself, he suffers an electric shock and ends up in a coma, prompting Elango and Arumugam come to steal the time machine from Parthasarathy’s shop. The duo use the time machine to make Arumugam’s astrology practice extremely successful by going back in time and finding things lost by people under the guise of astrology. Elango further uses the machine to impress Anu’s industrialist father Rajarathinam (Jayaprakash) by going to the future, obtaining the stock market results and successfully “predicting” them in front of Rajarathinam and his company’s board of directors. Rajarathinam soon approves the marriage of Anu with Elango.