Song Jin Poong is the eldest of four sons and works hard to earn money to support his family. He is also a man who cannot forget his first love. His mother, Ok Hee, wants him to get married because he is already 38 years old. Ok Hee believes that her sons are great catches and any woman would be lucky enough to marry them, however, their neighbors feel differently as each son has an unique problem.

Ma Fu, a retired employee of the HK Correctional Services Department, moved back to live with his son after retirement. Ma Fu treats and disciplines everyone in his family as if they were the offenders he works within his job. His youngest son Ma Chong feels like he's in jail when he gets home, and his father is even often involved with his job as a paralegal. The father and son get into disputes daily and his elder brother Ma Keung and his wife Lo Lai Seung are often stuck in between and have to settle the disputes. The couple also holds the heavy responsibility of raising their kids. Three generations in the Ma family all live together and encounter different situations, experiences, and system of values.

Haruki Kenji is the manager of the Winter Sports section of a large sporting goods company. On a ski trip in New Zealand with his friend Shintani Goro (who is also his boss) and Shintani's new secretary, Aoi Yuki. Upon returning to Japan he finds that he has a new neighbor in the apartment next to his. It is Aoi. While watching the movers he sees a photograph drop from new girl's luggage. Looking at the photo he sees it is a picture of a group from a female bicycle gang and upon looking closer he sees it is a picture of Aoi. Haruki finds her putting on a façade and fooling everyone at work with her nice girl persona. But at home she is anything but nice, dating lots of men and using them to get what she wants. This continues until one day Aoi comes home drunk and without her keys. Kenji lets her into her room via the door connecting their apartments. Aoi accidentally drops a video tape into Haruki's apartment. When he discovers the tape he watches it. On it Aoi has recorded a message to herself. Seeing this serious message, Haruki begins to view Aoi in a completely different light.

Love Generation, as the title suggests, revolves around the relationship of the two leading protagonists, Katagiri Teppei and Uesugi Riko, who begin their relationship as squabbling colleagues before falling in love. Katagiri Teppei is a talented designer and very popular among women. Unfortunately, Teppei, who despises conformity, is forced to move to the sales department for his egocentric behavior. Throughout the series, he is forced to adapt to the new working environment, which includes cutting his precious locks of hair to create a neater and more professional image. As he struggles to adapt, he meets Uesugi Riko. While she does not like him at first, she eventually falls for him. However, Teppei runs into his high school sweetheart Mizuhara Sanae, and discovers that his ex-girlfriend is now engaged to his brother Soichiro. Fortunately, Riko is there to console him, and this eventually blooms into a romance. Not long after, however, Sanae realizes she still has feelings for Teppei, and thus creates a love triangle. To make the matter even more complicated, Soichiro starts to have an affair with his past girlfriend.

Lee Se Hee never thought she'd be part of the popular clique in High School, neither did she expect herself to be in a love square with 3 very attractive popular guys! Who is she going to choose?

Kingchan, a baby girl who was left at Chan Poh tree, is adopted by Mr. Sanit, a headman. She can't handle his daughter, granddaughter, and son-in-law. Sriprapai, his daughter with mistress decides to take her in Waradul palace. She is the second wife of H.S.H. Issaresgunthorn. Kingchan respect on her, then meet M.R. Rungwigrai who Sriprapai take care for his blood mother who is the first wife of H.S.H. Issares that was caged in other building because of craziness Rungwigrai falls for Kingchan but she is being in love with Klao, a worker. They made a love promise with each other. Firstly, Kingchan feels sorry for Ringwigrai unusual and becomes hate because he tries to assault her. She decides to elope with Klao. Rungwigrai let ruffian chasing after them and beat Klao to die. Kingchan is going to be mad because of this. Growing wrathful in her heart, Kingchan come back Waradul palace, marry Rungwigrai in order to take revenge everyone who hurt her in here.