警花燕子

程威是一个工作狂，由此使他的家庭生活慢慢失去了平衡。妻子林叶离家出走了，儿子叛逆，这让程威陷入生活绝境。他不想让儿子承担，便一个人开始了寻找林叶的下落。思远却知道了母亲离开的原因以及好友佳佳的死亡，给他沉重的打击，从此变得沉默寡言，自闭、抑郁。内蒙草原，这是程威曾经当兵的地方，他想在这里面对妻子和儿子，进行自我救赎。

Gyeong-ah works as a caregiver and lives alone. The only one she can rely on is her daughter, Yeon-su, but it's hard to see her after she moved out on her own. Meanwhile, Yeon-su, who is suffering from her ex-boyfriend, Sang-hyun, argues with him again and visits her mother’s house. After Yeon-su left, Gyeong-ah receives a shocking message from a stranger.