When a new employee from a well-off family begins working for the first she had understood that she is walking into a fabulous working environment. This is what they call a 'white company.' Instead, she is in for a rude shock when the employer turns out to be a 'black company,' which is one with a negative environment, a rude boss, problematic co-workers, abuse and low pay. The employee's father runs a company that happens to go broke. She herself is not a model employee exactly however.

An ordinary salary man, Junosuke, goes in search of his lover, Miharu, who disappeared one night when she handed him the key to her room, and promised to be back in five minutes. She had only gone out to buy apples at the nearby convenience store, because Junosuke has one for breakfast every morning. Slightly drunk from the cocktail he had had earlier, Junosuke falls asleep, and wakes up the next morning to find that Miharu had never returned.

At a young age Kyoung-won knows she wants to become a pilot. When she reaches the right age, she travels to Japan to learn how to fly, and becomes Korea's first female pilot.

Mrs. Hong Duk-ja quits the Mafia and starts a food company, but an incredible case occurs when she goes on an overseas trip to Japan with her family.

Three former mafia members work at a construction company to avoid getting involved in the underworld again. But fates draw them back to the past when a gangster approaches one of them.

A young woman's curiosity propels her to investigate a series of strange deaths in her neighborhood.