Jackson King is born with a heart condition that leaves him weak and sick. At school, he is known to be the weakest of the other children.Despite this, Jack is no ordinary boy. At the age of sixteen, following a heart transplant, Jack suddenly develops mental and physical abilities. Everyone around Jack, in particular the school bullies, notice a dramatic change in him. Jack discovers that he is a morpher, someone that can change shape, from that of a person to look like an animal. As he begins to learn and control his new powers, he becomes the target of a criminal gang who want something special that Jack has. Little does he know that they will do anything in their power to obtain it...