Discovering that his elementary school is alive and menacing, hall monitor Sam Graves, assisted by his friends Lucy and Antonio, works to defend his fellow students as they rehearse for the class play.

Only a week into his job as hall monitor and class protector, Sam Graves and his friends Lucy and Antonio are trying to uncover the secrets of Eerie Elementary, their living and malevolent school--and then Lucy gets eaten by her locker.

Sam, Lucy, and Antonio have a new substitute teacher, who happens to be the great-great-grandson of Orson Eerie, the evil scientist whose spirit possesses and infects their elementary school--and the friends are afraid he may be trying to bring Orson back to life.

For the first time in years Eerie Elementary is planning a science fair, which may not be a good idea in a school which is alive and out to get the students--but when Sam and his friends find a book of experiments that contains all of Orson Eerie's notes, it may turn out to be the key they need to finally understand the mad scientist.

Sam is working on making a clay dinosaur for the school art show and sale when the clay suddenly comes to life and attacks him, a sure sign that once again Orson Eerie, whose spirit inhabits the school, is up to something--and it is up to Sam, Antonio, and Lucy, to discover how a self-portrait of Orson figures into his evil plan.

Eerie Elementary is planning a big Halloween-type celebration for Eerie Day, including hosting a "haunted house" at the school itself; but the spirit of the evil scientist Orson Eerie sees this as the chance to finally triumph over the intrepid hall moniters, Sam, Lucy, and Antonio--and it is up to them to prevent a catastrophe and perhaps even defeat Orson and banish him from the school forever.

When Oliver, Mya, and Jorge take a ride in a hot-air balloon, they crash-land on an unknown island filled with extinct animals and a horde of angry Vikings. Welcome to Poptropica, an uncharted group of islands whose existence is hidden from the rest of the world. As the three friends embark on a perilous search for a way home, they quickly discover the shocking reason they were brought there--something that threatens the very existence of Poptropica...

Eerie Elementary is planning a big Halloween-type celebration for Eerie Day, including hosting a "haunted house" at the school itself; but the spirit of the evil scientist Orson Eerie sees this as the chance to finally triumph over the intrepid hall monitors, Sam, Lucy, and Antonio--and it is up to them to prevent a catastrophe and perhaps even defeat Orson and banish him from the school forever.

Sam Graves discovers that his elementary school is alive and plotting against the students, and,as hall monitor, it is his job to protect them--but he will need some help from his friends.