On an ordinary rainy day, urban white-collar Yang Li picked up an injured young man - Hill. This seemingly ordinary man carries a surprising secret - he comes from an alien planet and his mission is to observe the human emotional world. Having just come into contact with human beings, he is naive and ignorant, and has no idea what "love" really means.
However, as time passed, Hill developed a deep dependence and paranoia on Yang Li. He was no longer satisfied with simple companionship and care, but was eager to fully incorporate her into his world, gradually showing frightening yandere emotions. He began to control everything about Yang Li in his own unique way, always paying attention to her life and emotional trends.
In this seemingly harmless relationship that gradually became oppressive, Hill even made a request that Yang Li couldn't accept - he wanted to give birth to a new life with her and fix their relationship and future forever. Faced with this extreme and crazy love, Yang Li felt both scared and conflicted. Can she escape this controlling and possessive feeling, or will she be ultimately bound by this "paranoid love"?
Purpose: Love and unity