Former Scissor Gang leader Eun-jin, who now suffers from amnesia, nevertheless defends Jae-cheol, a restaurateur who employs her, from a gangster who wants his business.

In a poor neighborhood in Seoul, the inhabitants live together in harmony despite their difficult circumstances.

After witnessing the brutal murder of his mother, Ma-ryong grows up intent on revenge and sets out to become a master of martial arts. When Ma-ryong kills his mother’s murderer, Il-pyung, the son of Ma-ryong’s enemy, seeks a master to learn how to fight. Ma-ryong and Il-pyung form a bond as master and apprentice leading to an inevitable showdown.

Hyun-il and his wife are returning from a fishing trip when they get into a car accident with a drunken man. They end up killing him. They meet with the dead man's wife, Su-jin, to come to an agreement. Su-jin demands their house so they make her to stay in their house temporarily. Mi-young's nerves are on edge due to Su-jin. Mi-young meets Jin, Su-jin's neighbor, and finds out that Su-jin was once a hostess. But Jin tries to rape Mi-young and she ends up killing him. This sends Mi-young over the edge and she is confined to a mental institution. Too late, Su-jin goes to Mi-young to ask for her forgiveness and then she leaves.

Gyu-hwa and Jin-wu are old friends with very different personalities. Their friend Mi-yeon used to be close to Jin-wu but when she grows up, she becomes a prisoner of Gyu-hwa's aggressive behavior. Gyu-hwa takes Ga-hi away from Jin-wu when he discovers that she comes from a wealthy family. But Gyu-hwa begins to have an affair with an older widow and begins to abuse Mi-yeon, the mother of his daughter.