Choi Yuna is a single mother. Her child, Choi Jin has wished for nothing but a partner for his hardworking mum. With 6 months left, which one of the three can win her and Jin’s heart? Kim Sojung, her business partner and Jin’s admirer? Jung Yerin, Yuna’s childhood crush and Jin’s teacher also his all time favourite? Or Jung Eunbi, Yerin’s little sister but her best friend, who loves hanging out with the both of them?