Mark has a rare cardiovascular condition that makes his heart beat slow down occasionally. For this reason, he's always been afraid to get close with anyone. But then he meets Jackson, who strides right past his protective walls and straight into his heart.

When Mark and Jackson are around their members, they only show half of how they feel for each other. BUT what about their love when only both of them are alone and away from the members. Especially inside their room where they can have all the privacy they want. Romance, drama and jealousy starts to stir up as the others starts to get involve in the markson love. "You are mine" ❤ "Just relax"