The FortressExpress is a powerful high-tech train, traveling through a private railway to the highest peaks of the Himalayas. This vehicle has the originality of being a prison, reputed to be the safest in the world, from which it is impossible to escape. Some of the most dangerous supervillains in the world are constantly locked in “inviolable” cells. However, a group of his super-criminals will organize to break free and, once out of their cell, will take revenge on the prison staff, who are much worse than them, being cruel and indifferent to their needs, and only intends to regain their freedom once they've made this train ancient history !
