In a dark and mysterious old town, many strange things happen every half of July. Su Jinnian, a 24-year-old poor young man, was busy working hard for a living. Lin Yuxuan, twenty-seven years old, had a rough life. Late one night in July and a half, the two met unexpectedly and were involved in a series of horrific and shocking events. Relying on each other in fear, moving from strangers to familiarity, and gradually falling in love, but the shadow of terror always lingers. Can they work together to overcome fear and find true love and light?