El francotirador de la Marina recién dado de baja, John Stewart, se encuentra en una encrucijada en su vida, una que solo se complica al recibir un anillo extraterrestre que le otorga los poderes de la Linterna Verde de la Tierra.

LITTLE HERO is about a young boy's quest to save his father from an ancient monster. When BAYU finds a sword, he accidentally awakens the giant evil Asura who turns everyone in the village to stone including his father. With his cousin Raney alongside, Bayu must find six Ancient Knights who carry amulets that will give Bayu the power to battle Asura and save his father and friends in the village.