Everyone knew them as  Wonho and Changkyun 2 members from a boy group called Monsta x. but 2 weeks ago their names were Theo and Daniel Leviathan 2 brothers from the year 2370 who were on the run after breaking every rule and going against the law. They found a watch that somehow took them back 351 years in the past. but they still look like themselves but everyone else takes them for someone else. With their knowledge about the future, they try to change it, to stop the apocalypse from ever happening and The WLOT from ever being created.