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In 1966, five children were kidnapped by an alien group known as the Alien Hunters for the Reconstructive Experiment Empire Mess, who wanted samples of humans from Earth to experiment on. The children were rescued by Mess' arch enemy, the Flash alien race, which took each one to a different planet of the Flash solar system for training. Each of them was trained separately in a range of superpowers that will allow them to fight Mess, their bodies also adapted to the atmosphere of the Flash Solar System making them gain special abilities. When they finally return to Earth in 1986 to combat Mess, who is now trying to invade it, they use the opportunity to search for their birth parents. They later learn that their time on Earth will be cut short as their birth planet's atmosphere has become deadly to them and after a year, they will die from what is known as the Anti-Flash Phenomenon.

45-year-old nurse and mother Yoko lives with her only daughter Tsukiko. The duo has a tight relationship that resembles more best friends rather than mother & daughter. Tsukiko's father passed away before she was born & since that time Yoko has always stated Tsukiko's father would be the first and last man she will marry. One evening, Yoko, who is drunk, brings home 30 year old Kenji Hattori and they both sleep outside on the porch. The next morning, Tsukiko becomes confused by the situation and becomes even confused when her mother announces that she will marry the much younger Kenji Hattori.

Tien has raised as a boy all her life because her father swapped her with her adopted parents son. LSo even her adopted brother doesn't know she is a girl until now. Her grandpa wanted a boy to carry the last name since Patson( her father's brother) can't have children. So his father swapped her with a care taker's son from his estate in Hua hin leaving behind a the ring and necklace. The grandfather is dead and so is Patson .Now her father wants to find her since he doesn't want the adopted son to inherit the money. Tien meet Rome after he saved her and take her to his house and yet didn't know that she is actually a girl . Rome was financially ruined by Patson years back. When he found out that she is a girl and his best friend's niece, he knew that she might be the real heiress of Patson family fortune. He tries to get Tien her place in the family and falls in love with her during the process.

The show focuses on high schools that hold yo-yo contests. The schools organize teams and participate in competitions to win against other schools. Each team has their own issues that they solve, and each yo-yo has a name that reflects the toy's design. The show makes use of minor special effects in order to portray the "magic" and the speed of the yo-yo. These magic spells are 'battling' and the person whose magic remains wins. Some of the yo-yo tricks are common, like the Forward Pass, Loop-the-Loop, Three-Leaf-Clover, Trapeze, Double or Nothing, Gravity Pull, etc. The show also has some tricks of its own created by the producers (most of the tricks are for professionals) like the White Buddha, Buddha's Revenge and the Cold Fusion (hardest trick of Season One).