Li Huiyan, a detective from the capital went to Shuangta, a small town in the northeast for a kidnapping case. Coincidently, she met and knew Zhou You, an undertaker who was trying to find out the truth about how his father got killed. However, the two were accidentally involved in an entanglement of thirty years. The night ends, and the day dawns. They’ve been in the cold town in the north for twelve days and nights, revealing the secrets about humanity to the audience. Double Tap will show the nirvana and rebirth of humanity on facing the freezing days.