Shinobu Takeuchi becomes a homeroom teacher at Ooki Elemntary School in Osaka, Japan. Shinobu loves mystery novels and can't stand things when it doesn't turn out right. Shinobu with three of her students then attempts to solve a difficult cases that even detectives can't solve.

Yang Lin is an exchange student at an England university who comes back to China because of news of her father's potential suicide by falling from a tall hospital building. Refusing to accept the fact that her father committed suicide and believing it was murder, she sets out to determine the actual cause of her father's death. This leads her to cross paths with the last person whom her father had a phone conversation with, Jiang Hai Yang, who coincidentally introduces her to the people who have the key to her family's secret past, including a long lost sister.

Tanimachi Mizuho has big dreams of living in Daikanyama and becoming a famous writer. In the middle of the winter, this strong-willed 26-year-old moves to Tokyo from the snowy countryside. Never doubting her ability, she keeps telling herself that if her desire to realize her dreams is strong enough, they will come true. What is waiting for her in Tokyo though, is something altogether different. Morinaga Kenta is an up-and-coming variety program scenario writer. Kenta moved to Tokyo five years ago, and with luck on his side, he became well-known in no time. Kenta and Mizuho are from the same hometown, and were friends growing up, but their friendship never blossomed into anything else. "Hachiko," as Kenta was known as when he was growing up, just goes with the flow and doesn't really have any big aspirations for himself. These two, who aren't having much luck with work or with their love lives, suddenly run into each other one day in Tokyo in the middle of winter. Being 26 is a tough point in life because it's too late to think of new dreams, but on the other hand, it's too late to abandon old ones...

Kenta Date, a high-school student, is the ultimate champion of an arcade video game called "Megaranger". He belongs to the Cybernetics club, a group of like minded friends from his school. Koichiro Endo, Shun Namiki, Chiasato Jogaseski, and Miku Imamura are also members of Cybernetics. The International Network of Excel-Science and Technology (INET), the games creators, invite Kenta and the Cybernetics club members to tour the INET laboratories. Following a short tour of the INET HQ buildings, the company is attacked by the Neijirejia, an evil force led by Dr. Hinelar on a mission to conquer the current reality. Dr. Kubota, INET's chief scientist, reveals that Megaranger was more than only a simple video game but actually a combat simulator to identify potential recruits for a super fighting team to combat the Neijirejia. While the INET headquarters (HQ) is destroyed by the Neijirejia warrior Yugande, Dr. Kubota gives Kenta and his friends devices known as 'Digitizers'. By entering the key-code "3-3-5" and shouting "Install, Megaranger!", Date, Endo, Namiki, Jogasaki and Imamura transform into the Megarangers to fight the Nejirejia.

This drama is about the takeover of the Korean government in 1979 by Chun Doo-Hwan .

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The series follows a school bully who chance upon special powers, which can be strengthen by studying. Along the way, the bully made friends and found a new meaning in life as his strength grew.