The Great North S04E03 - Aunt Misbehavin' Adventure

When Moon gets rejected by his crush for the Lil' Preppers Practice Prom, he goes off-grid for the night and sees a mysterious figure who is revealed to be the long-lost Aunt Dirt Tobin who has been in hiding in a bunker on the Tobin property since 1964. The Tobin family teaches Aunt Dirt all about modern life while Moon copes with his first bout of romantic rejection.