The movie has moments that feel corny and predictable, with performances that are over the top, yet it’s also visually appealing, full of energy, and ultimately an enjoyable distraction. "John Wick" centers on a former assassin who is pulled back into his old life due to a personal tragedy (there's no need for specifics here, but viewers sensitive to depictions of animal mistreatment should be aware). This plot has been done before, undoubtedly. What sets it apart is the setting. A hidden criminal network appears to have influence over everything, and there’s an established code of conduct among those involved in this world. It seems like everyone is connected or knowledgeable about these activities, suggesting a vast and pervasive society. The film shares more similarities with the "Wanted" comic than the movie adaptation did. The stylized action and identification with Keanu Reeves' character as Wick are enhanced by the fact that he’s not an infallible hero; he sustains injuries frequently. Unlike a character like Neo, he isn’t indestructible. Instead, his extensive training and resolve make the fight scenes more compelling because you can’t be certain of the outcome, lending them a sense of realism despite their intensity. It's true that many of the action sequences are quite theatrical and wouldn't be practical in reality. Considering how expansive this criminal underworld appears to be, it seems designed from the beginning as a series of films. Supporting characters like Ian McShane’s Winston (who consistently calls Wick "Jonathan," despite the different spelling) and Lance Reddick's hotel manager (whose character hints at deeper complexities that I hope are explored later) suggest there is much more story to tell. It isn’t a particularly intelligent or thought-provoking film, but it provides entertainment for a couple of hours if you enjoy action movies.

Source on TMDB