Watch Sadisflix. Red Alert is a suspenseful action film about narcotics, based on the true story of a rural family in Yongtai, and shot on location in Fuzhou. The main character, Wang Li, drops out of the police academy and works as a delivery boy because of the shadow of his childhood. He finds out that his brother Sun Zhao and his girlfriend Bai Mei are involved in a case of poisoned milk tea, which is related to the death of his parents 19 years ago.