The whole soulmate thing makes Yeosang feel like in a bird cage, it's a curse. He wants San's name gone from his skin.
A certain member wants to save him from the gossip, but also his own personal problem.
They say when you write your number and hide it in an unknown place, the first person to find it and call you is your soulmate.
But what happens when you find a hidden number but your soulmate and you are like parallel lines that are never meant to cross each other.