An immigrant worker at a pickle factory is accidentally preserved for 100 years and wakes up in modern day Brooklyn. He learns his only surviving relative is his great grandson, a computer coder who he can’t connect with.
Fired from his band and hard up for cash, guitarist and vocalist Dewey Finn finagles his way into a job as a fifth-grade substitute teacher at a private school, where he secretly begins teaching his students the finer points of rock ‘n’ roll. The school’s hard-nosed principal is rightly suspicious of Finn’s activities. But Finn’s roommate remains in the dark about what he’s doing.