Stillman, a heartbroken physics student builds a time machine when his girlfriend Debbie breaks up with him. Going back in time, Stillman attempts to fix every mistake he made to save their relationship, while dragging his best friend, Evan, along in the process.
A genius teenage boy is in love with a girl who breaks up with him after a year. He invents a time machine and tries to fix the breakup repeatedly. He finally goes a year back with his friend to fix the bad days.