A barren noblewoman encourages her husband to take a young peasant as a surrogate to secure the male line.

Kwon Dal-ho is a teacher who wants to make his 3rd grade class the best. Yu-dae becomes the class representative and Ki-pyo, the leader of the ten troublesome students who’ve been held back, transfers to his class to the chagrin of the other kids…

Gi-yeon is burdened by her half-brother's insidious gaze, but one day when he enters the bedroom, she decides to run away. Gi-yeon, who comes to Seoul for the first time, is caught by gangsters, but with the help of lightning, she gets out of trouble and lives with him in his apartment. Lightning, a member of a criminal organization, rejects Gi-yeon's pure love and for the sake of money, he makes Saron's regular customers Song Jeon-mu and Gi-yeon live. One day, Ki-yeon finds out that she is having a child of lightning. Lightning coolly shakes off Gi-yeon's hand, begging for her to live with her.

A North Korean soldier is severely wounded. He surrenders and is rescued by the South. The North Korean soldier surrendered to meet his father in the South. The soldier's last name is Han. He is 31 years old. His hometown is Heungnam. With those words, the soldier falls into unconsciousness. Meanwhile, the Heungnam Refugees Association sets out to find the father. They find three possible matches.

Soo-ok, who had a strange dream last night, accidentally meets Dong-sik in the swimming pool. Born in an orphan, Dong-sik deplores the reality that he cannot endure anymore while teaching. As he rolls around, he overlooks the fact that Soo-ok, whom he saw for the first time in the world of Namchang, is a homogeneous human being with him and asks for a suit. Su-ok spends his childhood in the arms of her mother, who is both princesses, and comes out of college, but her lover Deok-ki learns about Su-ok's living environment and abandons her. Around the time Su-ok, who suffered a broken heart, is the main object and is self-disciplined, he meets and falls in love with Dong-sik. As Dong-sik gets hurt, Su-ok comes to Su-ok and insults him. Su-ok ends up killing Deok-gi. Along the way, Su-ok and Dong-sik run into the blue sea. Then, they swim far away to find their paradise.