Min-woo, the consulate general of the overseas consulate, was determined to be Japan's next consulate. For this reason, Min-woo becomes determined to learn Japanese and lives with his wife's friend, Mika, and learns Japanese. Min-woo's assistant, Ji-sung, has a brief relationship with the consul general. The more the unfamiliar is revealed, the more deeply the story of the four-way relationship becomes irreversible.

A young mother takes interest in her friend's son. Her interest in him makes her forget herself and drives her to pursue him.

Hyeon-soo manages a hostel run by his friend Jeong-ho. It's a hostel for foreign female students. There is a Korean-American from LA, a Japanese who's here to learn Korean out of love for K-Pop and his friend's sister who just happens to be there. These women are very outspoken and Hyeon-soo and Jeong-ho fall for them.

Young-suk's father, Dae-sung, is the one who will soon become your stepmother and introduces Hitomi to Young-suk. Hitomi is a young lady of twenty-five who is two years younger than Youngsuk. Young-seok's younger and sexy stepmother Hitomi keeps beating more and more. Then one night, Hitomi comes into Youngsuk's room and takes off his pants...?! Dad begins a breathtaking double life with a Japanese mother you should never know.