Yeonjun and Soobin cross paths when Yeonjun's been hired onto the swat team that Soobin has been on for years. Yeonjun, coming from his government job, and Soobin, having served in the army, connect in a way they've never been able to with anyone else before. Mental health, a crazy ex, and a big secret have a chance of getting in the way of everything: Love is at stake. Will they be able to overcome this? Or will they go back to how it was before they met: complete strangers.