Every morning, A wakes up in a different body. After 16 years of this life, A has developed a philosophy of “do no harm,” attempting to interfere with the life of each day’s host as little as possible so that person can go on with his or her life the next day when A is gone. That’s working well until A falls in love with Rihanna, and begins trying to be with her as much as possible. Not easy, when you might wake up three or four hours away, and today’s “you” might not have a car. Or might not get along with her parents. Or might have a drug problem. A moving mix of science fiction and romance with an ending that is both optimistic and bittersweet.