Kung Fu Hustle (2004)

In 1940s Shanghai, a wannabe gangster tries to join the Axe Gang, while residents of a housing complex exhibit extraordinary powers to defend themselves. Turmoil ensues when a pair of troublemakers impersonate Axe Gang members, leading to a massive brawl. The wannabe gangster and his friend narrowly escape and attempt to join the gang by committing a murder, but fail comically. As tensions escalate, the Axe Gang hires skilled assassins to attack the housing complex. However, the residents, including the landlords who are kung fu masters, intervene. Sing, the wannabe gangster, goes through a transformation and unleashes his hidden kung fu skills to protect the residents from the Axe Gang and the assassins. In the end, Sing and his friend open a candy store, and Sing is reunited with the mute girl from his childhood.