Hero: 108 (2010)

S1E2 Elephant Castle

Amid a scorching heat wave, Big Green learns that the Elephants are employing their whistles to control humans. In their mission to rescue Commander ApeTrully, First Squad is compelled to blow a colossal whistle more accurately than the Elephant King. Meanwhile, Lin Chung is busy creating a mural on a tree using bird footprints. Frustration mounts when the Elephant King ruins his artwork, prompting Lin Chung to blow the whistle with newfound precision, resulting in its destruction.