Billionaire, software mogul, Adam Pi has everything in life with the exception of positive memories from High School. He begrudging goes to the 20th reunion and has such an amazing time he finds himself wondering "If I knew then what I know now" and offers the entire grad class one year's salary to come back and do one more month of the 12th grade.

When nice-guy Jeremy Martin (Jace Norman) puts on mysterious virtual reality glasses at the mall, he suddenly loses his “inside voice” and starts spouting every thought he has out loud. Making matters worse, Jeremy is running for student council president against his classmate Milly (Daniella Perkins), who is full of great ideas to improve the school. Desperate to get back to normal, Jeremy and his sister Victoria (JoJo Siwa) must figure out how to convince his brain that he can speak up for himself.