Not every fight is won by heroes. Sometimes, you need a monster.

Joan has achieved the impossible. She reset the timeline, saved her family - and destroyed the hero. But success has come at a terrible cost.

She alone remembers what happened. Aaron, her hard-won friend - and maybe more-- is now her enemy. And Nick, the boy she loved, doesn't even know her name.

Then an attack forces Joan back into the monster world as a fugitive, where she discovers a secret that threatens everyone she loves. Now Joan must re-gather her allies to face down a deadly enemy, and save the timeline itself . .