But to break it down in one quick blurb, the game is about a catastrophic event that merged the worlds of the living and the dead that forced people worldwide to live in bunkers cities that are disconnected from each other. You play as a delivery man that has a disease that allows him to die and come back to life and is responsible for delivering vital packages between the various bunkers and connecting them to a central network. You use a 28-week old fetus (bridge baby/bb) that was pulled from a still mother (a mom who died while pregnant) to help see/detect the spirits (beached things/BTs) that appear while you deliver packages.