Wonwoo and Wonjae are twins, however while they're physically identical on the outside, their personalities are completely different. Growing up, the twins have shared and experienced most moments together, but they've never been in love. What would happen if that time came, if the twins finally fell in love, if they finally found that special someone who makes their heart skip a beat. What if that special someone was the same person? Enter Kim Mingyu, the handsome new guy, who catches the Jeon twins' attention.