A sister in modern martial arts and a brother who is a master of science unexpectedly time travel together. Faced with greedy relatives and scheming outsiders, the siblings must work together to break the situation and start a counterattack in the imperial examination and business in ancient times. However, this bizarre ancient world is actually a real martial arts world with hidden swords and shadows. Can they use modern wisdom and peerless martial arts to find their way between the court and the world and become the true uncrowned king?