Five-year-old American boy Milo has been learning from a Chinese Tai Chi master since childhood, yet he has always been unaware that he possesses Tai Chi powers beyond the ordinary. One day, his master asks him to carry a milk bottle taller than himself down the mountain and embark on a journey to find his missing mother. Upon arriving in New York, Milo accidentally saves William, the head of the Hawthorne family, and uses his instinctive Tai Chi power to defeat a giant lizard man, astonishing everyone. Meanwhile, Ava, the heiress of the Hawthorne family, has been searching for her missing son for five years, and the golden pendant around Milo's neck is the key that connects their identities. As the lizard tribe leader Damien pressures Ava into a forced marriage, Milo repeatedly protects his family in his adorably naive way and helps his grandfather William understand Tai Chi, allowing the weak to overcome the strong. In the end, the mother and son recognize each other through the pendant and uncover the truth behind the disappearance five years ago. After reuniting with his mother, Milo once again unleashes his powerful Tai Chi to protect her, officially beginning the legendary story of 'The Adorable Baby Protecting His Family.'.
