A man in his 40s withstands the weight of life. A woman in her 20s goes through different experiences, but also withstands the weight of her life. The man and woman get together to help each other.
Although Baek Hee Sung is hiding a dark secret surrounding his true identity, he has established a happy family life. But his facade begins to crumble when his wife, a homicide detective, begins investigating murders from 15 years ago.