In near-future Japan, Susie Sakamoto is mourning the loss of her husband and son to a plane crash. Alone in her big modern house, which feels like more of a prison, Susie spends her days drinking heavily and taking her anger out at the only sentient thing left in her life: Sunny, the annoying home robot her husband designed. Susie despises Sunny, and sometimes even gets a sinking feeling that Sunny is out to hurt her.

To escape her paranoia and depression, Susie frequents the seedy, drug-fueled bars of the city, where she hears rumors of The Dark Manual, a set of guidelines that allow you to reprogram your robot for nefarious purposes. In the hopes of finding a way to turn off Sunny for good, Susie begins to search for the manual, only to learn it s too late: the machines are becoming more sentient and dangerous. Thrust into the center of a dark, corporate war, Susie realizes there s someone behind the code, pulling the strings. And they want her dead.

With a darkly humorous yet propulsive and lyrical voice, O Sullivan presents us with an unsettling look at a future that feels all too real. Gripping and thought-provoking, Sunny is a haunting character study of an anxious woman teetering in an anxious time.