Tom and Jerry are veterinarians in this episode. After a popular lion at the zoo gets a splinter in his paw, it's up to the new doctors to fix the problem before it worsens. The lion is afraid of the tweezers that Tom and Jerry are going to use to get the splinter out. He's afraid of everything else they use, and that's when they find out that he's not exactly the bravest one in his family. This is a patient that Tom and Jerry will have some trouble curing.