Celebrity guests are split into two teams to compete in various contests. One guest, known only to himself, is designated the "X-Man", and does his best to cause his team to lose the contests. At the end, all guests try to determine the X-Man's identity.

The queen of department stores and the prince of supermarkets weather a marital crisis—until love miraculously begins to bloom again.

In a world that is less than kind, a young woman and a middle-aged man develop a sense of kinship as they find warmth and comfort in one another.

Ji-eun has a bad impression of men due to bad experiences with her father but her mom Hyeon-ah convinces her into getting tuition from an art student. Jeong-woo is surprised at how cold she is towards him but at the same time, there's tension between the two. Meanwhile, Hyeon-ah, who is afraid something might happen between the two, calls Jeong-woo in and suggests something but he confesses his love for Hyeon-ah instead. They have fallen into an unappropriate relationship and Ji-eun decides to give her mom a surprise.

Tae-su, a detective fighting organized crime, returns to his hometown for his high school friend Wang-jae's funeral. There, he meets his old friends Pil-ho, Dong-hwan and Seok-hwan and they reminisce. Suspecting something fishy about Wang-jae's death, Tae-su and Seok-hwan start investigating it, each in his own way. Their investigations lead to a land development project that Pil-ho is directing.

Despite their different family backgrounds, four friends grew up together in the wearisome years of the 70s. But as time goes by, each of them takes a different life path.

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Young-Hoon works for his mother’s restaurant, but he prefers hanging out with his friends. He then meets Yeun-ah, a tough lady that works in a room salon as a barmaid. She takes the initiative by coming to his restaurant, when he is working, and propositions him in a playful way. They become a couple, but their relationship is always volatile. They fight constantly (physically and verbally), but the next moment kiss and make up. Meanwhile, Young-Hoon already has another girlfriend, who is his finance!

After the death of his father who had left the house and his family, his debt was inherited by Sang-woo who is unable to cope with the debt. So he finds another heir, a half-brother and his mother, to fend off the debt of his father.

The arrival of new music teacher makes a big difference for a group of troubled high school students.