In which Byun Baekhyun is one of the best con artists in Seoul, targeting the rich and corrupt. Full of ideas and wit, his seniors call him a young mastermind. As if his life can't get any more hectic, he encounters a drunk woman about his age and in a span of one day, they are living under the same roof. Though this woman turns out to be not as normal as she seems, Baekhyun is already falling for her.