96 minutes

Former police bomb disposal officer Song Kangren, who was involved in the deaths of hundreds of people three years ago, and his fiancée, Huang Xin, board the No. 115 high-speed train from Taipei to Kaohsiung. During the 96-minute journey, it is revealed that both the No. 115 train and the parallel train are equipped with interconnected bombs. The bomb disposal officer faces a difficult choice, as reducing the train's speed will lead to an explosion, while attempting to defuse the bomb on one of the trains will cause an explosion on the other.