* Sexsomnia: Attempting or engaging in sexual activity while asleep Or symptoms of not remembering one's actions after waking up following sexual intercourse. Chi Young, whose girlfriend who used to whisper "I love you" vanished overnight, leaving him with a huge debt. He receives a suspicious offer from a mysterious man to work for six months for 100 million won and becomes the home nurse for Eui-hyun, who was a childhood friend from the orphanage. His heart gradually warms to Eui-Hyun’s affectionate demeanor. He's dying to have a relationship with the man who bursts into his room at night.