Han Geu Roo is an autistic 20-year-old. He works for his father’s business “Move To Heaven,” a company that specializes in crime scene cleanup, where they also collect and arrange items left by deceased people, and deliver them to the bereaved family. When Geu Roo's father dies, Geu Roo's guardianship passes to his uncle, ex-convict Cho Sang Gu, who is a martial arts fighter in underground matches. Per the father's will, Sang Gu must care for and work with Geu Roo in “Move To Heaven” for three months to gain full guardianship and claim the inheritance. Eying money, Sang Gu agrees to the conditions and moves in. (Source: MyDramaList) Adapted from the nonfiction essay "Things Left Behind" by professional trauma cleaner Kim Sae Byul.