A group of superheroes are having a bad day and learn to cope with their emotions.

A sleepy Princess in Black takes a much-needed vacation and rides her bicycle to the seaside, where she plans to nap in a hammock, but her peace is disrupted by a roaring sea monster.

Relates the earliest adventures of the Incredible Hulk, based on the original comics, describing the life of Bruce Banner, from his shy childhood to his military career and the experiment that went wrong.

Iron Man and the hero known as the Black Panther team up to stop a group of scientist who want to take over the world!

Relates the earliest adventures of Captain America, based on the original comics, describing the life of Steve Rogers, from attempting to join the Army at the start of World War II, failing the physical examination, to being recommended for the classified Project: Rebirth, being injected with the Super-Soldier serum, and becoming America's first Avenger, Captain America.

When a goo monster crashes the science fair, the Princess in Black is on the job, and with the help of the Princess in Blankets, sets out to save the science fair.

"Who says princesses don't wear black? When trouble raises its blue monster head, Princess Magnolia ditches her flouncy dresses and becomes the Princess in Black!"--

"A boy asks Captain Mighty what it takes to become a hero. There's a costume to choose and a power to develop. But most of all, it takes smarts and heart! It's not long before the boy defeats the local villain, Turbo Troll, and earns his new name: the Silver Cyclone!"--Amazon.com.

A girl named Flora and a squirrel named Ulysses, whose life was saved by Flora after he was involved in an incident with a vacuum cleaner, team up to use Ulysses' superpowers to conquer villains and protect the weak.

Batman gets inside the prison where the Penguin is held to stop him from unleashing his new army of criminals on Gotham City.