The movie's overall message is that to be a family, you need unconditional love -- and that you have to forgive yourself for past wrongs. Additionally, there's a positive lesson about a healthy marriage and family dynamic versus the very dysfunctional family dynamic that the three main characters display.
The entire movie centers around mixed martial arts (MMA) fights; some are quick (an instant knock-out), while others are brutal and drawn out. Characters get seriously hurt (a few look like they're nearly unconscious during/after a fight), and in a couple of cases, fighters have bones broken. There's not much blood, and no one is killed, but the competitors sport a variety of bruises and are shown limping or dragging their wounded limbs. The fighting style involves arms and legs, so there's a lot of intense punching, kicking, headlocks, body slamming, and more. Commentators narrate the action and often talk about how so-and-so looks like he's "getting killed," "not moving," etc.
A husband and wife kiss, embrace, and have a couple of mature late-night conversations in the bathroom -- once while she's in her underwear and tank top, another while he's shirtless and in the tub. Women in bikinis are "ring girls."
Language includes "s--t," "bulls--t," "ass," "hell," "idiot," one use of "f--k," "crap," "damn," "goddamned," "oh my God," etc. Insulting and hurtful words are exchanged by estranged relatives.
No overt product placements, but the movie is bound to draw attention to Ultimate Fighting Championship (UFC) and the mixed martial arts (MMA) style of kickboxing. ESPN is briefly shown in a couple of scenes.
Drinking, Drugs & Smoking
An older man -- an alcoholic -- falls off the wagon and is shown drunk, disoriented, and nearly incoherent. There are empty bottles strewn around a hotel room to show just how much he's had to drink. A character is known to be a pill-popper and is made to relinquish his prescription bottles in a somewhat humorous manner.