Movie plot

Please help to correct my writing if there are any mistakes.

Short Plot

A scientist invents a watch that can travel back in time. His evil brother, in an attempt to steal the watch, ends up killing the scientist, but not before he manages to hide his infant baby and the watch.

Long Plot
Sethuraman, a scientist who invents a time-traveling watch. Seeing the varied profits that this watch can generate, Sethuraman's brother, Athreya goes all out and kills Sethuraman and his wife, but not before he manages to hand over his infant baby and the watch to a lady he meets on the train. 25 years pass by, and Athreya once again comes looking for the watch which is now with Mani, son of Sethuraman. During this process, Mani comes to know about the power of the watch and the evil intentions of Athreya.