A father comes to in his car, strapped into the seat next to him his wife has become infected but in the back seat his baby daughter is fine. With a zone nearby known to be safe from infection, the father sets out to ensure safety for his baby girl no matter what the cost.
As Theo has already said, the zombie horror genre is a pretty regular one in the genre of short films and, although I personally get scared quite easily by them, it is a genre that can easily feel tired and overused. It is to Cargo's credit then, that it creates something that works really well and doesn't rely on the usual jump scares or clichés of the genre. Here our setting is a zombie apocalypse but really the film is about love of a father for his child and this aspect is what keeps the interest and ultimately moves. The simple idea is delivered without any dialogue but yet the determination and the fact that the father never thinks of himself is really nicely shown.
If I had a complaint it would be that the music is a bit too obviously tragic and the final shots of sitting on the hill with the baby is a little corny, but the concept delivers the feels even if the specifics such as these are not what I would have liked. The genre is used to deliver something more than the norm and it is moving and memorable for what it does.