A romantic comedy about a man and a woman who have completely different views on money living together. The female office lady who works in the finance department of a toy company is a frugal person because of her upbringing and education. She pursues a lifestyle with the motto of "a life of poverty" and makes the best use of everything without any waste or consumption. The male protagonist is a second-generation rich man from a toy company who lives an extremely extravagant and wasteful life. He angered his father because of his excessive spending and was transferred to the finance department. The two people with completely opposite values inexplicably started living together by coincidence, and gradually ignited the spark of love.