A world, a world where people have soulmates, each and every person on earth is connected, bonded to another one, wherever this person is. A world where soulmates can communicate with each other through skin, everything they wrote, sketched, or draw on the skin, will appear on the soulmate's and disappear a few minutes later.

Kang Dae Cha is the best bodyguard in Seoul, South Korea. She has succeeded well in her academics, which places her at the top in the academy. When an anti-fan threatens the life of the famous K-Pop star, Kim Taehyung, she transfers and shadows the star. He challenges her abilities only to be left in amazement and curiosity for this woman, and her many talents and abilities. He slowly develops feelings for her and falls for her unique personality, but will she return them?