The teenager David Raskin is a genius that dreams on joining the MIT. He has a crush on Jessie Pierce but he is too shy to date her. When David finds the design of a time machine that belonged to his father, he decides to build the device together with his friends Quinn Goldberg and Adam Le and his sister Christina Raskin. Soon Jessie joins the group and becomes David's girlfriend. When their experiment gets out of control and changing the future, David decides to fix the problems making them worse.