Jea finds herself at a crossroads after becoming pregnant with the child of Young-gi, a married man. Unable to give up her baby, she makes an unexpected proposal to her childhood friend Gu-in. Bound by circumstances he cannot refuse, Gu-in agrees to become her fake husband and the baby's father. What begins as a bizarre arrangement gradually turns into genuine affection as they raise the child together. But when Young-gi's wife, Kyung-ah, discovers the truth, everything spirals out of control. Caught in a tangled web of love, lies, and family, their outrageous romance takes an unpredictable turn.
