"A train that travels forever?"

A group of 5 people, find themselves on a train seemingly leading them to nowhere. They know nothing about themselves, or the others that are there with them

A young girl, along with four other strangers, must complete mission after mission, only revealed to them by the train's message board. They are taken to worlds much different from their own, where the universal laws they know may not apply. They can only follow the orders given, in order to reclaim their identities.