Lin Zhiqiu, who was an intern in the hospital, had a strange dream one night, which led to a disappearance case three years ago. Following the investigation, a man who overlapped in the dream and reality appeared. But she fell into a strange and weird situation The vortex of love and truth. When she got close to the truth, there was another perfect murder case in a secret room, which led to the sudden death of the person who held the key evidence. Who killed it? Everyone is suspected!? Love murder? Vendetta murder? Murder? The case is complicated and confusing. Everyone has a secret and is drowning in the deep sea of ​​secrets... Why did Lin Zhiqiu have such a strange dream? The truth in it is complicated and terrifying. Anticipation. But Lin Zhiqiu, who fell in love, couldn't tell who the person he really loved was...