A group of four imperial guards including Ying, Sao, Yuanlong and Niehu are assigned by The Ming Emperor to escort the Golden Wheel of Time, which is said to have the power of time travel and foresee into the future, from Sindu to the capital. However, they are betrayed, and accidentally buried and kept frozen in time by avalanche. 400 years later, they are discovered by scientists and become their research subjects. Suddenly waking up at Hong Kong, they continue their pending battle in the new context.