After the battle with their demon father ends in a devastating loss, the Grimm sisters are separated. But, now three years later, as their twenty-first birthday approaches, dark fate brings them together once more.

For Goldie, this birthday is overshadowed by sorrow. She cannot forget the outcome of that battle, the devastating tragedy that has wreaked havoc on her already turbulent waking life. While her sisters have thrown themselves into their own endeavors, Goldie has grown distant and inconsolable. Driven by grief, she devises a diabolical plan using a human sacrifice to resurrect what she has lost.

When Liyana unexpectedly discovers what Goldie intends to do, she agrees to help if Goldie will try another way, without sacrificing a life. Returning to Everwhere, they combine their powerful magic to bring back what Goldie has lost. But something goes terribly wrong, and Scarlet is showing signs of being possessed by an evil spirit.

With their lives at stake, the sisters realize they must confront their personal trauma, make amends with the past, and once again prepare for a demonic fight to come.

And on the night of their birthday, battle ensues . . . and tragedy strikes once more.