The story of Ai Huizhou, a patient with dysthermia, and Han Suining, a descendant of a family of traditional Chinese medicine, who formed a contract due to a strange "hug therapy". Ai Huizhou was born with the ability to read memories by touching others. This "gift" made him live in alienation and loneliness all year round, and his body temperature was abnormally low. Han Suining inherited the family's traditional Chinese medicine clinic and could feel the flow of temperature with his fingertips, but he hid family secrets related to body temperature.
A treatment agreement allows them to relieve Ai Huizhou's symptoms with daily hugs. The moment their skins touched, fragments of memory flowed like a tide: he read the bitterness in her childhood medicine jar, and she glimpsed his fear of being overwhelmed by the torrent of memories. Dependence grew in Chenshi's embrace, and the emotion gradually rose along with the body temperature curve, until Ai Huizhou accidentally touched the memory of the fatal case, and the shadow of death spread along his fingertips.
When the body temperature contract becomes a shackles of fear, will the trauma deep in each other's memories be revealed, or will dependence and love be frozen together? They must find the antidote of "nurturing warmth with warmth" in the puzzle of memory, so that every hug turns from treatment into the beginning of two-way redemption.