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