The plot is simple. There are a group of people, some of whom do not get along. There is some sort of monster. Be it a large alligator in Lake Placid , genetically altered sharks in Deep Blue Sea , or the multitude of other examples present, Hollywood keeps pumping these movies out at a furious rate. More often than not, the movie is a silly exercise you sit through and forget.
Bats falls squarely into the latter category.
The monsters this time are, surprise, bats. Not just normal bats, but ones from Indonesia, about the size of foxes. Because of some shady experiments performed on them, they are now super smart and bloodthirsty. Jimmy is the token black character, who wisecracks his way through the movie. Casper is the serious, dedicated scientist, who does not want to destroy these bats, but to study them.