The film follows Leonard Shelby, a man suffering from , which prevents him from forming new memories after a traumatic head injury. He uses a system of Polaroid photos, notes, and tattoos to track his quest for revenge against the man he believes raped and murdered his wife.
Without his quest for revenge, Leonard has no identity. He intentionally creates a cycle of vengeance to give his life meaning, showing the dark side of human obsession. Critical Legacy memento isaidub full