The older boys are graduating school and recount their memories together. The next day everyone defends the graduation ceremony against Zundar and Dadacha's Second Button Monster but Yumoto struggles using his love power.

The anime will follow the adventures of Baron, a man living on continent of Arad in the year 981 after "the cursed light of Kazan" has fallen across the land. Thanks to the curse, one of his arms has become possessed. After finding a sword that has been possessed by the spirit Roxy, he embarks on a quest to unravel the secret of the curse and meets various people who also join his party.

A comical fantasy adventure on a fight against invaders from another world. The ruler of dark world "Don Kurai," Dark, plots to dominate the human world. There is a legend about three treasures and a hero in Don Kurai, and Dark takes over one of the three treasures, a bell of copper, but a man sent other two treasures (a spear of gold and a shield of silver) to the human world. Shinnosuke falls into Dark's trap and opens the door between the human world and Don Kurai, but he becomes the hero selected by the spear of gold. With the power of a girl from Don Kurai, Mata Tami, the Nohara Family transform into various things and fight against Dark. (Source: Manabu Tsuribe)

Second part of Hero Mask.