This drama tells the story of Makoto Ogata, who lost her memory, freeing herself from her self-consciousness while feeling uneasy, and looking for her true self and love partner. In order to avoid being disliked in her private life and work, 24-year-old Makoto lives a life that does not show her true self and does not attract attention. On a night when cherry blossoms were flying, she lost her memory, including her name, in an accident. She originally planned to give the men's ring in her bag to someone else, but because the three handsome guys who claimed to be her ex-boyfriend, her only male friend, and her destined person were a perfect match for the ring, she started a polyamorous love affair. However, the three of them had their own lies... Does the ring belong to one of them? ? Who am I! ?