One is born with an icy constitution, the other with a burning one. Natural complements, their fates bound together. Bound by a System that forces them to share body heat, two strangers are made to draw close. Shen Yu is cold and taciturn, with astonishing strength, yet uniquely tender and possessive toward Gu Nian, doing everything in his power to protect her life. Gu Nian is fragile yet resilient, clear-eyed and optimistic, and little by little she melts Shen Yu’s coldness and heals his loneliness.