The Runaways are a family again! But a family needs a guardian, and the only Runaway who's got her life together is in middle school. And, even for a kid like Molly who likes her classes, that can be fraught with peril. Meanwhile, there's a new arrival as the gang welcomes Karolina's girlfriend - Julie Power of Power Pack! Having an experienced adventurer around will be useful when one of the universe's most fearsome villains invades the hostel! But do some of the Runaways have mixed feelings about Julie's arrival?