In the years when the Berlin Wall stood tall, the war was not yet over, and people's hearts had already crumbled.
Li Dan is a composed, self-controlled doctor of psychology, while Klaus is the subject of an isolation experiment.
She thinks this is just a standard experiment, but she has no idea that from the first day she walks into that observation room, he will never be able to leave it again.
On this man-made "island," she is the only person who can enter his world.
Here, Klaus learns attachment, adoration, and love. The way he looks at her is like a pilgrim gazing toward the light.
But Li Dan knows that this "love" is nothing more than a psychological illusion created by the conditions of the experiment.
"I love you."
Looking at the blazing emotion in Klaus's eyes, Li Dan feels nothing but confusion.
In this experiment of complete isolation, are you truly in love with me, or can you only love me?
Female lead: A psychological researcher with great empathy who represses her emotions
Male lead: A test subject whose mental state gradually deteriorates during the experiment
Premise: Extreme isolation experiment x distinguishing real feelings from false ones x psychological warfare + forbidden romance
Theme: Searching for the definition of love