The Valkyrie's Trap

Lucy Ming and her boyfriend Hector board a strange bus. Its passengers act bizarrely. Its license plate matches a crashed bus reported on the radio. Two passengers get off. Lucy hears a news report that two people have died, making her abandon getting off. The driver runs over pedestrians; passengers act as if they saw nothing. Hector demands to get off. Lucy Ming, knowing getting off means death, tries to stop him. What secrets does this mysterious bus truly hide?