Caily asks Jax for help figuring out why her fish Fabio isn't feeling well. He encourages her to look at a sample of Fabio's fish tank water under a microscope, and Reese's research catches the culprit: pesky protozoa. Kami asks the girls for help with Dev, who is terrified that Parchment Pond is haunted by glowing ghosts, but a microscope reveals the truth.