I obtain a mysterious notebook that can return me to any place, date, and time written inside it. Though skeptical, I decide to revisit every moment when I came painfully close to sex but lost my nerve: being alone with an adult swim-club role-player in the changing room, lying beside someone after a house party, spending a rain-soaked afternoon alone with an adult classmate role-player, and receiving devoted care from the woman responsible for a car accident. I have missed countless chances, but the notebook offers access to timelines where I can make a different choice. There is only one chance each time—so this time, I am determined to finish what I started.