A rebellious teenager, future Beatle John Lennon lives with his Aunt Mimi in working-class mid-1950s Liverpool, England. Mimi's husband suddenly dies, and John spies his mother Julia at the funeral. Despite Mimi's misgivings, John intends to have a real relationship with his mother. Julia introduces him to popular music and the banjo and, though a family conflict looms, young John is inspired to form his own band.