"It all started with a mysterious purple goo...What happens when four best friends find themselves splattered with a bubbling, genetically altering substance during a seemingly innocent sleepover in a secret, see-through, high-tech, futuristic lab? They develop superpowers, that?s what! Iris, Cheri, Scarlet, and not so much Opaline have become . . .The Ultra Violets"--Back cover.