From the outside, the Suhs seem like a loving, cookie-cutter, middle-class family with their lives in perfect order. In reality, everyone is hiding some secrets. The father has the hots for a young grad student. The mother is flirting around with a photographer she's posing for. The daughter is engaged but has a sex partner on the side. The son has a girlfriend, but he's been stalking the same student his father likes! What will happen to this perfect family when the secrets spill?

Best friends Jang-won and Choi Min and his wife Eun-hye make a bet to overcome their boring lives. They risk their lives to go after the married woman who is well known for her chasity. However, the bet goes the wrong way and they learn what real love is...

Hyeok-Ju, who is interested in copying adults more than in studying, are meant to marry to Bo-Mi since he was a little boy. Then one day they came to get married due to Bo-Mi's family situation though they are just second grader of high school. On their honeymoon trip with tent, however, they experience serious trouble from the first day. With Bo-Mi's solid threaten that she will make love to him after they pass the entrance exam, they start awkward married life.... While he copies of grown-ups about sex and love with his friends, Hyeok-Jun tries to change Bo-Mi's mind but only in vain. While they encourage each other to pass college tests, the little couple gradually open their eyes of true love. At last they encounter the long-waited bridal night in Vietnam with notice of pass............

Min-wook tells her son Byung-chan's lover Hye-kyung to break up with him. After some time, Jin-hee, a high school student, and her son are forcibly married. However, Byung-chan continues to meet with his ex-girlfriend Hye-kyung and treats his wife Jin-hee unconditionally. Jin-hee is increasingly attracted to her father-in-law, Min-wook, who comforts her, and she eventually leads her relationship with Min-wook. Jin-hee, who is really desperate for her child, asks her to have a child for her father-in-law, Min-wook...

Yeonsil and Minwoo just got married and go on their honeymoon. However, on the first night of her honeymoon, Min-woo feels betrayed by the fact that her Yeon-sil is not her virginity and breaks up with her. After breaking up with Min-woo, Yeon-sil wanders repeatedly and sometimes spends the night with an unknown man. The business partner of her Yeon-sil, President Kim, can't understand her feelings for her, and she repeatedly courts her, but when she is rejected by her every time, she becomes closer to Hye-soo, her junior in Yeon-sil. After spending the night with her Yeon-sil, her Dong-cheol begins to monitor her, and her Yeon-sil does not forget her. Meanwhile, Yeon-sil's husband, Min-woo, comes to visit. He asks to reunite with Yeonsil, but after a long time, the two become awkward, but Dongcheol appears in front of Yeonsil.

One day, a woman named Chiyome Hesogakure with a child named Chinzō visits the Nohara family and claims that she is the real mother of Shinnosuke and takes him away to a Ninja Village. In the Ninja Village, the Hesogakure family has been protecting "the earth's navel" by blocking it with a pure gold stopper using the "Mononoke technique" that has been passed down from generation. If it comes off, the earth will wither, the rotation will stop, and the "tomorrow" of the world will be lost! It is up to Shinnosuke to reveal the mystery of his birth and protect the future of the earth and the "tomorrow" of his family.