After saving the world from magical invasion, Cassie is hoping to have a relaxing summer at the beach, preferably with her now-human boyfriend. However, news of Sam's un-demonic status has somehow gotten out, putting the whole entourage on the defensive. How can they protect themselves from vengeful demons when their own resident hellspawn has been busted back to slinging espresso shots at the shop? As if that weren't bad enough, someone with a very dangerous skill set has noticed that a lot of high-powered deals seem to go down in a certain little coffee shop, and he wants answers. Add a member of the entourage getting a very unexpected power boost and a strange monster made out of rocks and gems that keeps trying to kidnap Cassie, and this summer is not going at all like Cassie planned. At least there's still delicious iced mocha lattes at The Daily Grind....