Heroes of Terra

Three heroes had a meeting in the capital as three kids decided to sneak in their meeting room, on of the heroes noticed them but was impressed that he couldn't notice them until 30 minutes passed. He offered them to come with him, to train them. Of course they agreed to this offer, from now the three kids will encounter old evil beings that want to free their master, a conqueror and an otherworldy power.

Seasons

 * Freedom
 * Oppression
 * Extinction