Transit succeeds where very little other thrillers do- this one keeps the pace intact for the entire time without even *one* second of boredom. If you blink you'll miss a lot. It's about four robbers that come up with this plan to put a bag of stolen money with this family headed for a vacation. Apparently the reason behind this is, so the police don't suspect anything when the criminals are pulled over and have their vehicle searched. The police can't arrest four guilty-looking people based solely on looking guilty *especially* if there's no bag of stolen money in their possession, right?
Well the truth is, it seems suspicious that the cops wouldn't notice that these robbers looked familiar and would therefore arrest them on the spot, so we'll assume it was a clueless cop that pulled them over and searched their vehicle. Then again, if the robbery was recent and this was the first time they've committed a crime, the cops wouldn't yet have an idea what the suspects look like. With this in mind, this particular plothole might not exist and is totally forgivable.
With all the commotion going on between the bad guys and the family switching back and forth from one segment to another at lightning speed, it took several minutes to figure out who was actually who. Perhaps a poor way of introducing the characters, but not terrible since all the pieces were soon to fall into place.
Anyway, once the robbers are free to roam the streets, they search for the family that unwillingly has their money in their possession (mixed in with the other camping trip bags) and from here... all you-know-what breaks loose! It's then a game of survival as the family argues, yells, runs, drives, hides, swims, uses any and all weapons they can find such as guns and knives, all in an attempt to get rid of these feisty criminals that always seem to be right behind them. PURE action-packed, and the movie doesn't disappoint.
Terrific acting all around, great storytelling that's easy to understand (after the first 10 minutes) and a fantastic movie overall.