"SisterS Shuttle Siam" tells the story of the love and bonding of two siblings of the same blood. "One was born to kill.Another was born to be hunted." The fight against the violent fate. And it can't be known how it'll end... Mora, a 16-year-old girl who begins to feel anomalies with her body that has become more suspicious.The queen of the shuttle that lived through the cold on the human world for a long time, meaning the life of the former deep-seated resentment with their families.So it's time for Wena, the older sister who sacrificed her whole life to protect the weak sister from the enemy's hands before losing her forever...