It was a legend...but it came true...12 boys were known as EXO were born in exoplanet while in a planet called Earth...a girl was adopted with special power that no one else had...

That girl was called to a unknown planet which her bioligical mother lives...was joined by EXO to defeat who ever stole Chen's father's lighting bolt...

Zeus is the God of lighting which his wife gave birth to their only son by the name Kim Jongdae aka Chen...Chen has lighting powers...by the time he turned 18 his father gave him a scorpion ring which symbolizes his power...

Athena is the beloved mother to Aether...Aether has a special power that no one shall know...when Aether turned 19 she was sent to Earth to protect her from danger....

What happens when Athena knows that the monsters are looking for her daughter????