Willy, Grace, and Tom all decide to make their mom the best Mother's Day presents, including painting their own room, washing the dog, and making cookies, but instead of helping, they just make a mess.

Eek and Ack come up with a plan to use their oozler invention to paralyze Earth, but find themselves stuck on an asteroid with the unexpected results from their experiment.

Aliens Eek and Ack visit Earth during Halloween and meet Wolfy the Wolfman.

At Halo Nightly's school, the swimmers are disappearing from the boys' swim team. No one can figure it out, until Halo starts investigating. A deadly mermaid lives in a cave connected to the school swimming pool. Halo will have to use her special candy to turn into various underwater fauna, such as a hammerhead shark or an octopus, to defeat the hungry girl-fish!

On Halo Nightly's eleventh birthday, her Aunt Pandora gives her a collection of jars filled with brightly colored candies. Soon she learns that the candies give her the incredible powers of nature. Halo uses the powers to combat Doozie Hiss, a rival student with superpowered hair.