When cynical divorce lawyer Jamie Walsh drunkenly manifests "someone who will never leave me" at a cosmic workshop, she expects nothing to happen. Instead, she wakes up to find a cheerful stranger living in her house—and a legally binding contract that makes it impossible for professional house-sitter Alex Riversong to leave. What starts as a cosmic clerical error becomes a month-long cohabitation that transforms Jamie's sterile house into a home filled with plants, laughter, and the terrifying possibility of love. But when the universe's mistake gets corrected, Jamie must choose between the safety of solitude and the risk of asking Alex to stay—not because she has to, but because she wants to.