Read the following excerpt from a student essay. How can the writer best improve their word choice?

I saw a film called Blob Invasion. It was really good. It was about a weird guy who was into science. He worked on insects and small animals. He made a machine that did things to the insects and the animals. They became big weird things. One day he transformed himself by accident. He became a big blob! He went around doing bad things to the city. In the end, a boy figured out how to change the blob back into a man. I would recommend this film to everyone who likes fun science films.