In the dead of night, a man walks into a police station to report a missing person: himself. Stricken with amnesia, he can only recall the moment he found himself alone in an unfamiliar apartment. Desperate for any hint of his identity, he searches for clues but finds nothing. Summoning the courage to venture outside, he encounters a girl at a convenience store who seems to recognize him. She quickly becomes his beacon of hope and happiness, but upon his return, she has vanished. His search shifts from recovering his own memories to a more pressing mission: finding someone who remembers him, turning into a journey to reunite with a lost love.