The world is not black and white.
Lin Youwei's exam was ruined by a conspiracy. Three years later, she became Li Yu's "sleep assistant" - a position the whole company laughed at.
She didn't know that the unjust case that ruined her life and the tragic breakup with her ex had hidden shocking secrets.
Li Yu's world is made up of insomnia and drugs. Abandoned as a child, a teenager was kidnapped, and his father even "bargained" with the kidnapper on the phone... He became an emotional patient.
Until Lin Youwei, who was always messing up but had a little trouble, crashed into his life. She was his only tranquilizer late at night.
"Lin Youwei," he held her hand in the darkness, "it seems that you are the only medicine for my disease."
He didn't know that this "treatment" was the first time his heart had broken down for a person.