Having never met before, they are placed in an apartment together and told to ingest a small pill They pass out and wake up with COMPLETE MEMORY LOSS! An announcement sounds informing the “apartment residents” (really the social experiment participants) that there’s been a biochemical accident, leaking a dangerous gas that causes people to lose their memory! The whole building is put under quarantine and told not to leave their rooms… All around the apartment are clues that suggest the certain lives our characters have supposedly lived.