Take a very ordinary, very unhappy 14 year old boy, Phoenix. He's bored by school, hates his step-father, feels like he has no control over his life. In fact, the only things he does like are computer games and martial arts.
Add a smart, miserable 14 year old girl, Jade. She's the youngest of seven girls; teased and picked on; a misfit; her own mother doesn't get her. All she likes is books and botany.
Throw both these kids into a computer game - 80AD - AND into their avatar's bodies. Phoenix and Jade aren't 14 year old kids any longer. They're 17 year old warriors, confused...