Lady Solea's family can't figure out how she lost her memories or why she keeps raving about her "jackpot." They don't realize she's actually Yoon Jiyoon, a lottery winner who was suddenly brought into their world! Determined to return to her reality and claim her riches, Jiyoon sets off a series of shenanigans to send herself home. Yet when Solea's family proves more fun than expected and distracts her from the mission to leave, Jiyoon begins to wonder if family is worth more than a fortune...