It stars Seven and Ace battling against...well, what may or may not be an ancient goddess of evil. What I can tell you is that the book includes 7 walking aimlessly through his own mind while also being dead in a sentient, talking church, Ace getting involved in a bullying PSA in which she dies at least once, and 5 gets crucified on a tree. The plots ends up being resolved by 7 doing self-therapy. It's a confusing book (rating at least a 8.5 on the Moffat Mindscrew Scale) but also GOAT. Read it!