Five friends find themselves entangled in a mysterious and vengeful force after a chance encounter with a malevolent entity following a mercury poisoning incident. As they unknowingly provoke the wrath of this entity, their lives take a dark and twisted turn. Through a series of unexpected events, the friends must navigate a dangerous path as they face the consequences of their past actions. "Mercury (2018)" unravels a gripping tale of friendship, guilt, and redemption in the face of an unforgiving foe.