Rudy's peaceful life changes abruptly when his home is attacked. He decides to protect his grandmother, unaware that he is following in the footsteps of the legendary Yarn Guardians. His grandmother told him stories of the heroes who once restored and maintained peace with the powerful Yarn Balls. On his journey, the adventurous cat encounters power-hungry villains and shady characters. But on his mission to recover all of the lost Yarn Balls, he also finds allies and makes friends. Can they join forces to save their world from a new war?