Siva Kumar (Suriya) is an accomplished scientist. He invents a gadget for time travel in 1990. That’s when his cruel twin brother Athreya (Suriya) kills him, but misses acquiring the gadget. It stays with Mani (Suriya), son of Siva Kumar who is taken care by a kind lady Satya (Saranya). Rest of the story is all about how Mani realises the power of the gadget and settles score using it.