Chen Boqing is a severe neurotic obsessive-compulsive disorder patient with a very serious cleanliness fetish, and when he has to go out, he always goes out in full armor. The 15th of every month is the only day that Pachinko goes out to shop, and on that fateful 15th, he meets another weirdo who shares the same illness, Chen Jing. In addition to being a serious cleanliness freak like Bo Qing, Chen Jing's skin would become severely allergic to any place other than her home for more than four hours, causing red spots to grow all over her body. Originally, they thought they would be alone in the world forever, but God made them meet and develop a spotless love, as if they no longer fear being abandoned by the world when they have each other.