Indy and her BFF Olivia are, like every other child in the world, obsessed with slime! At an International Slime Day they take part in a competition to make the most original slime. The only person who despises slime is Dominicus Duff, the biggest toy boss in the land. Because of slime, he is not selling any of his own toys anymore and so he wants to make all slime illegal and confiscate it. Will Indy and Olivia succeed in saving slime?