Chinatown: Return of the Dragon God

In San Francisco's Chinatown, Grandpa Li, the owner of a grocery store who appears weak and easily bullied, is actually a retired top Chinese agent codenamed "Breath of the Dragon." His neighbor, an orphan girl named Mia, accidentally witnesses tech billionaire Trey trying to eliminate a witness, which brings deadly danger upon her. To protect Mia, Grandpa Li reveals his unparalleled martial arts skills, taking on a hundred enemies alone.