Storyline:In the early hours of 21 August 2015, an armed terrorist in the Thalys train 9364 from Amsterdam to Paris opened fire on train travelers. But the lives of the 500 passengers aboard the express train are saved by the courageous intervention of some passengers, including the three accompanying American soldiers Anthony Sadler, Alek Skarlatos and Spencer Stone (all three play themselves). The friends overpower the culprit and become heroes. In a series of flashbacks, the childhood and youth of the three soldiers are told and what circumstances led to their being aboard the train. Clint Eastwood is filming the story of the thwarted terror attack on the train from Amsterdam to Paris in the book "The 15:17 To Paris: The True Story Of A Terrorist, A Train And The Three American Heroes".