For eleven year-old Ellie, sixth grade brings new and uncomfortable changes. Her best friend seems to have left her behind. Her goldfish has died. And her mother brings home a strange, fussy teenage boy who claims to be her grandfather.
Grandpa Melvin claims to have discovered the secrets of eternal youth. Now that he’s a teenager, though, no one will take him seriously. With the help of Ellie and another student, he hopes to complete his research and finally win that Nobel prize.