Imagine your surprise if you learned your father is a Greek god. That shocking discovery means, as Percy Jackson discovers, he is a demi-god.

The Lightning Thief: The Percy Jackson Musical begins with that premise and romps merrily through the resulting action when Percy goes to a summer camp for teens. There, our hero discovers not only who he is, but also who his classmates and teachers are. On top of all that, he is assigned a quest (something all heroes must have). He must find Zeus’ stolen lightning bolt before all-out war descends upon the lesser gods and demi-gods.

The show is a real feast for fantasy lovers (hand raised here). The Helen’s stadium seating suggests classic Greek theatre structures — albeit on a much smaller scale.