Shrooms

S1 E6: Killi by mistake consumes magic mushrooms (hallucinogen) stored secretly at his restaurant by his assistant. When he reaches home he starts hallucinating that the house is a battlefield; that he is a warrior of the Cholan army, and that the housemates are from the enemy camp. As he locks the door, the housemates have no choice but to play along until they find a way to get out.