Richie's future adult self travels back in time to ask for Richie's help. Meanwhile, Harper realizes she made a huge error on her Harvard application.

A game designer convinces Richie he should have a game app based on his life. Meanwhile, Cliff helps Harper work on a musical number.

Everyone is waiting for Richie to release his next big invention, so he works with Murray, Tahj and his Dad to brainstorm the next big thing.