STARLOVE is a dating app based on star ratings. Lee Kang-min strives to become a five-star man, trusting algorithms over emotions and love over numbers. One day, a system error matches him with a one-star woman, who is his complete opposite in ratings, personality, and values. Hoping just to get over with the disastrous date, Kang-min instead finds their time together stranger and more complex than any formula he knows. Can a calculated man and an unpredictable woman make it through the date?