After a drunken mistake, office worker Claire wakes up beside Logan—her fiancé Ethan’s younger brother. Determined to bury the secret, she only gets pulled deeper as Logan’s teasing turns into real love and Ethan begins to notice. Desire, guilt, jealousy, and old sibling wounds push all three to a breaking point. When the truth explodes, Claire must choose between the safe love she knows and the forbidden love she can’t let go—or refuse to choose at all.