I'm a WWE fan, and John Cena happens to be my favorite :)
In 12 Rounds, Cena plays Danny Fisher, a New Orleans cop who helps catch a terrorist, Miles Jackson. While he is apprehending Jackson, Jackson's girlfriend tries to run and gets hit and killed by a car. One year later, Jackson escapes and comes looking for revenge. He kidnaps Danny's girlfriend Molly and devises a series of challenges (rounds) which Danny must pass to get Molly back. There is also an ulterior motive in some of the steps, which is helping Jackson pull off another heist. Part of what makes this a very good movie is how smart Jackson is, and how he has planned and thought out each step of the 'rounds'. Danny is an excellent counter to that, because he is pretty good at figuring out Jackson's plan.
Actually Not too much in content warnings. There is some cursing, some violence, and lots of action, and explosions.
An excellent movie.