During the Ming Dynasty, four orphans named Ying, Sao, Yuanlong, and Niehu grow up together in Taoyuan Village, forming a bond as strong as brotherhood. Their remarkable martial arts prowess propels them to the top ranks of the imperial guards. After successfully assassinating a Japanese troop leader, the Emperor tasks Ying with the mission of escorting the Golden Wheel of Time from Sindu (modern-day India) back to the capital. This artifact is believed to possess the ability to manipulate time and predict the future. Fast forward to 2013, where Squire Tang, backed by an enigmatic financier, unearths three ancient icemen on the outskirts of China—Ying, Sao, and Niehu. While transporting them to Hong Kong for further examination, an unexpected traffic accident thaws Ying…