Stop peeking and let's have a fling. Min-ho works at a private detective agency where peeking into others' lives is what he does. One day, a pretty woman named Mi-na asks him to tail her husband and Min-ho is in for a shock. The man he's tracking down is in an affair with his wife, Soo-kyung. The place they meet each other is usually Min-ho's house after he's gone to work. Min-ho installs secret cameras to catch theem in action and watches the scene with Mi-na.

Professional photographer Lauren travels to Miami to find the next hottest model for her shoot. She hooks up with her emotional Cuban limo driver Raul, but then her cheating sleazy husband Stephen shows up as well as hot Marissa.

Eun-joo is a twenty-year-old pre-college student who lives with her sister Eun-hee. Eun-hee is worried about her sister's academics and hires Je-hyuk as her tutor. Eun-joo falls for Je-hyuk as time goes by. They end up making love. A few months later, Eun-joo improves her grades and passes her tests. However, Eun-hee announces that she's getting married to Je-hyuk and Eun-joo doesn't want to lose him...

Mi-yeong, who lives in the backhouse comes between the strong friendship of Deuk-chan and Cheol-soo. Mi-yeong is usually blunt and cold, but in bed, it's a different story. Deuk-chan approaches her with love, but Cheol-soo only wants to remain sex partners with her. Meanwhile, Deuk-chan who loves Mi-yeong had an old sex partner, Hee-jin. Cheol-soo shows interest in Hee-jin. The love story of two youthful men and women begins...

Chi Soo is struggling to survive medical school life due to his family situation. In his school days, Chi Soo lived in his old friend Song Eun Cheol's house, but naturally became close to Song Eun Soo, Eun Chul's younger sister, and they got married. However, love too is brief... In his second year of marriage Chi Soo experiences a period of ennui, and meets Monica Jeong (Jeong Soo Hee). Monica Jeong impersonated herself as an international lawyer in the United States and came to Korea, and introduced herself as the only child of a wealthy family.

You only have eyes for me? Seong-yeong and three men around her. She says she loves them and have loved them. "There's goodbyes and pain. That's how you mature up." Seung-won was innocent. Jang Hyeok was passionate and Seok-min was cozy. Seong-yeong was in the middle of them. She suffers from meeting the three of them and decides to take revenge on those who betrayed her.

Yeong-seok had a crush on his club mate, Hee-yeon. He decides to confess her love after 1262 days but gives up upon witnessing Hee-yeon kissing her senior. With his roommate, Byung-soon's recommendation, Yeong-seok visits a dating coach website called 'Adventure M' and he will meet another applicant, Myo-ryeong. Myo-ryeong who picked up and dropped off the perfect-looking, sexy Yeong-seok, offers a motel tour...

One day on the street, Mi-yeong greets Deuk-chan then he made a fuss, wondering if he likes Mi-yeong. Whenever he is having sex with Hee-jin, thoughts of Mi-yeong comes to him... Then one day, his friend Cheol-soo sets up a blind date. A few days later, the blind date happens and the woman who came is none other than Deuk-chan's dream, Mi-yeong. As soon as they meet, they go to the motel... Mi-yeong who is usually blunt looks so different in bed. Deuk-chan loved that Mi-yeong who finds eating harder than having sex. There's a subtle air between the two...

A young woman named Gina buys a how-to book on sex, leading to a series of erotic dreams and fantasies.

Tae-hee, can't live without her dead husband, and is living alone without being remarried. Her neighborhood friends, Yeong-ju and Cheol-min still feels sorry for her. However, Yeong-ju's son, Min-ho, secretly takes pictures of Tae-hee, admiring her. One day, Tae-hee and Yeong-ju goes to the grocery when she heads back home, after forgetting her cellphone in Yeong-ju's house. Just in time, Min-ho comes out of the shower and hugs Tae-hee...

Their neighbors, Young-hoon and Chul-soo, have their first love, Minjung. The innocent glass appears to the two men, and each other's love is mixed. As time goes by, Young-hun finds out that her real love is glass and discusses how to reconcile again. Meanwhile, Chulsoo completes his life in the city and descends to his hometown. Then, by chance, Yeonghoon and Yuri appear in the place of reconciliation, and after seeing such withdrawal, Yeonghoon is very embarrassed and asks why he came back. Cheolsu presents something to Younghoon and Cheolsoo and Yeonghoon Yuri go to Minjung's home, the first love of the two men... The story of the two men and women who cannot see one another begins again.

Yoo Mi-ri, a female president of a camping site where various guests gather, has CCTV installed everywhere in the campground and always records with an action cam to check on complaints she receives from guests. Doing things in this way has led her to develop the habit of observing people in advance. One day, an incident occurs where someone steals Mi-ri's underwear, which prompts her to observe guests more closely to catch this culprit. But unexpectedly, she finds out someone's secret, and that is someone's desire to burn himself with sex when lightning strikes.

Seok-jin has a tremendous amount of energy. Mi-sun introduces her friend Hyun-jung to Seok-jin, who will be the very father. Hyunjung, who had no place to stay, stayed at Seokjin's house at the request of Misun. Hyunjeong is twisting Seokjin. After having sex with Seok-jin, Hyun-jung says that it was too good for Mi-sun. Mi-sun approaches Seok-jin as a substitute for Hyun-woo, who is the best. Seokjin also enjoys sex with his sister's fiance, Misun.

Seonghwan is invited to Hyejung's house. On the day of the invitation, I see Hye-jung's sister, Hee-soo, and fall in love with her at first sight. Hee-soo also continues to be attracted to the old first love and younger Sung-hwan. Seong-hwan and Hee-soo have a conflict between their sister and brother. Eventually, my sister secretly engaged in love affair, Sunghwan, who can't miss both, I make an extreme choice to love.