Uno Meiko is the daughter of parents who run a western style restaurant in Tokyo. She marries and moves to Osaka with her husband. Meiko experiences cultural differences between Tokyo and Osaka, as she lives as a mother and wife in Osaka.

Park Ji Sang is a doctor specializing in hepato-pancreato-biliary surgery in the best cancer research hospital in the country. He is also a vampire. Despite seeming cold and unfeeling, Ji Sang masks his soft heart and inner pain and yearns for closeness with people. He believes very strongly in the sanctity of human life, and suppresses his thirst for blood to treat terminally ill patients and save lives. Among his colleagues is Yoo Ri Ta, a hotshot physician who entered medical school at the age of 17 and is also the niece of the chaebol group chairman who owns the hospital. Ri Ta is highly capable but snooty and prideful, yet Ji Sang finds himself falling for her. He also gets drawn into a conflict between good and evil as he encounters Lee Jae Wook, a two-faced hospital chief who gains everyone's trust with his gentle demeanor, but inwardly harbors a dangerous ambition for power and a talent for cruelty.

Locked away deep in his home and hiding a secret that keeps him there, Detective Kozaburo Himuro remains ever vigilant in his duties of police work. But how does the wunderkind detective investigate crime scenes without ever stepping out of his home? Enter traffic cop Kurumi Ayaki. She's a young lady who's about to marry and resign from the force when tasked with being Himuro's eyes and ears on the beat. While on the scene of the crime their only means of communication is via mobile phone. Together they investigate a series of mind-boggling murder mysteries that put them, particularly Kurumi, in constant danger. Can Kurumi keep up with Detective Himuro, and the fast-paced and dangerous work of criminal investigation?

Upon getting thrown out of his girlfriend Fujiko's apartment, Hiromi (Sorimachi) decides to head for the ocean. En route, he crosses paths with Kaito (Takenouchi), an elite employee of a large multinational trading company in Tokyo who is running away from his problems at work after losing a key client. The two stumble into a quiet B&B on the beach run by the aging surfer Masaru and his high-school-aged granddaughter Makoto. Hiromi immediately applies to work there for the summer, and Kaito is forced to join him after he loses his wallet. The two share a room, with Hiromi trying to make friends, and Kaito at first resisting, unimpressed by Hiromi's devil-may-care attitude. Slowly over the ensuing episodes, Kaito becomes more and more at home in this sleepy rural town, and begins to wonder if he should give up his pursuit of success in the big city, and try to relax, and enjoy himself more. When he returns to Tokyo to finish his work, Hiromi and Makoto come to lure him back, but when he returns to the B&B, his boss and girlfriend Sakura likewise come looking for him.

Witness Protection Unit (WPU) officer, Hui Wai Sam (Bosco Wong) is assigned to protect Kiu Chi Lam (Linda Chung). A lone figure who possesses a depressive streak, Chi Lam has few social ties. Through Wai Sam, Chi Lam learns the true meaning of happiness. Due to his questionable dealings with Lai Shu Fung (Lee Kwok Lun李國麟). Chi Lam’s father, Kiu Kong San (Paul Chun秦 沛) disapproves of their relationship. Afraid that Wai Sam’s meddling may threaten his wealth and status should his skeletons come tumbling out of the closet.

After spending 20 years searching for the object of his vengeance, Sekiya Kanbei discovers he is now a ronin. Inui Sanshiro was the head of a clan until his son succeeded him, or so he says. Genmu claims to have once been a ninja. These three elderly men join forces to travel the Japanese countryside together. Along the way, they encounter situations that bring out the "warrior" in each of them, and soon they are fighting the corruption and injustices that plague the common people.

Yu Gang Hyuk was only 7 years old when his father was murdered in a car "accident" and separated from his identical twin, Yu Shin Hyuk. He forgot his name and family and given the name Suh Ha Eun by his adopted father Suh Jae Soo. He falls in love with his adopted sister, Eun Ha and tried to be very honorable about it. He was led to become a cop because of his father's badge. While investigating an alleged case of suicide, he eventually learns of his twin brother. Against the warnings of his peers, Ha Eun becomes more and more involved in this suspicious case. As a part of a larger scheme, Ha Eun is targeted for a hit by unknown individuals. And when Ha Eun and Shin Hyuk finally meet for the first time in twenty years, the murderers kill Shin Hyuk accidentally mistaken him for Ha Eun. As a result, Ha Eun vows to get revenge by giving his enemies psychological torture and takes on his brother's persona as an undercover cop and that is where the drama begins.