After his girlfriend cheats on him and his career collapses, protagonist Lu Zhi ends up homeless on the streets. At a convenience store he runs into Lin Xiaoxue, a "spiritual girl" with only 4 yuan and 30 cents to her name, and accidentally activates the "Spending on Spiritual Girls Refund System"—every cent he spends on them can be returned ten to a thousand times over. Lu Zhi follows Lin Xiaoxue to the rundown old apartment she shares with five sisters, and meets five other "spiritual girls," each with a wildly different personality.