The action-adventure series follows Leo, an ordinary 12-year-old boy with an extraordinary talent and a huge problem. The once-thriving world of Iko is in tatters at the mercy of the Giants who rule the 10 realms. Only one hero can save them … and he's the size of a flea. Young Leo is plucked from another world to lead the fight against the tyrannical villains who have kept the 10 realms under their control.