WARNING: THIS IS UNDERSWAP DON'T GET TRIGGERED Sans and Papyrus have lost the rest of the Underswap crew after an incident at the airport. Without their luggage, communication to the other monsters, and no clue how to reunite, they set off. They have wandered what what seemed like forever, until they find hope, litterely and figuratively. A friendly human named Christie took in the two brothers until they could get back.