Wham! Bam! Pow! Filled with kung fu fights designed for maximum pain, bad-[expletive] pre-teens and songs from a smokin’-hot soundtrack, this is not your childhood Karate Kid. More than 25 years after Ralph Macchio made “wax on, wax off” a pop culture staple, Jaden Smith steps up as the underdog hero in this fast-paced remake.

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