A fox named Tod and a hound named Copper vow to be best friends forever. However, as Copper becomes a hunting dog, their unlikely friendship faces a challenging test.

In this interquel, best friends Tod and Copper face the challenges of jealousy and betrayal when Copper joins a band of singing dogs, testing their friendship and loyalty. With the help of their animal friends, they must find a way to save their friendship and confront the slimy leader of the singing dogs.