After her father's death on a mountain rescue mission, Kaylie Ames watched her family shatter. So when Kaylie fled Tacoma for college in faraway Austin, she figured that even the worst campus drama would be a relief. But when her old friend Elliott turns up on his knees in the grocery store aisle, raving about something called a morphis, Kaylie feels compelled to enter Elliott's unfamiliar world.

Guided by Elliott and his friends, Kaylie signs on to the massively popular online game Edannair. There she discovers a world of beautiful vistas and magical creatures, where people from all over the globe step into the roles of warriors on fantastical quests. But a real-world evil threatens the players: the mysterious Holder, leader of the elite team known as Sarkmarr, is coercing his followers into traumatic offline dares known as "morphis assignments." To save her friends, Kaylie must infiltrate Sarkmarr and survive the Holder's tests. Will she find the courage there to keep her own family from falling apart?