Six friends, who've known each other from childhood, break into the tower block they lived in as kids, now deserted and condemned, to rig-up a pirate radio station, get high and party. When one of the group goes missing, her friends begin to search the dark interior of the tower and soon realize that they are not alone: a resident psychopath lurks in the shadows and is hunting them down, taking them out, one-by-one.

While in Wales visiting her husband James, Adèlle tries to fix her relationship with her teenager daughter Sarah. They see a weird memorial without the plate and with the name "Annwyn" marked, and the local Dafydd explains that this would be the place where people go after dying in accordance with the Welsh mythology. Later, Sarah vanishes on the beach and the daughter of the local fanatic shepherd, Ebrill, who died fifty years ago, appears in her place. Adele makes a research trying to find how to rescue her daughter from Annway.

Georgia is an American academic who's lost her teaching job in Athens. She's taken a job as a tour guide, but she hates it and it shows: the tourists, mostly American, are bored with history and facts; they want to shop. Every group has a goofy couple, a frat boy, a sullen teen, a feuding couple, divorcées looking for a mate, and a funny guy. This group is no exception, plus there's no air conditioning and a bearded silent driver. Thanks to an unlikely friendship, plus daisies, an ice-cream cone, the history of syrup, and the Oracle at Delphi, Georgia may have a shot at finding her kefi during this four-day tour.