Professor Neelakantan is a maverick scientist and inventor who develops and constructs a time machine and begins experimenting with it. He realizes that his machine requires a recognized "object" to work, so he seeks to locate such an object that can be transported through time. He jokingly tells his pet dog that he would use it as the "object".
Varsha and Vikas are Neelakantan's mischievous grandchildren who live with their parents and are very fond of their grandfather. While visiting, the two children enter Neelakantan's laboratory in his absence and start playing with the dog. Varsha throws a ball that strikes the time machine's control screen and accidentally turns on the device, which recognizes Varsha and Vikas as transferable "objects". Neelakantan enters the room and is shocked to see the machine's condition, but it is too late. As he tries to save the kids, he too is recognized as an "object" by the machine, and he and his grandchildren are accidentally transported to the year 16,50,26,188 BC. They encounter several extinct animals, including dangerous dinosaurs. At first, they are afraid and struggle to understand what to do. But gradually, they try to befriend the dinosaurs. They wish to return to modern times, but to do this, they need a source of electricity, which does not exist in the prehistoric times they have been transported to. How they survive their circumstances and finally manage to return to the present is the main plot of the film.