Shen Yan has lived for a thousand years and is a foreigner living in the world. He is cold and aloof, and is used to living alone. Until that rainy night, he picked up the young Ling Yu and took him home.
He took good care of him and watched the boy grow from an ignorant child into a tall and upright young man. But the uneasiness caused by the long years made him unable to help but "lock" Ling Yu close to him in his own way, thinking that he could retain this warmth.
Ling Yu knew how special Shen Yan was and also understood his deep uneasiness. He is obedient on the surface, but secretly he has already become full-fledged. When Shen Yan unexpectedly gave birth to an heir and his strength weakened, Ling Yu finally showed his fangs.
"Sir," Ling Yu's voice was low and dangerous, with a possessiveness that could not be refused, "You used to protect me, but now, I will protect you. You are not allowed to go anywhere."
A battle about protection and possession, dependence and control, is quietly taking place in the city filled with cold fog. In this fateful entanglement between a thousand-year-old alien race and the humans he raised, who is the calamity for whom, and who is the salvation?
Purpose: To explore the paranoia and possession caused by loneliness. Love should not be imprisoned and bound. Two people trapped in loneliness learn to understand each other's fear and fragility through the tug and pull, find a consistent balance between control and compromise, and explore the boundaries of freedom and protection in an intimate relationship.