When worlds collide, it's up to Hanna-Barbera's most well-known adventure-seeking heroes to save the galaxy! Johnny Quest, Space Ghost, The Herculoids, and more are re-imagined here in this new action-adventure thriller! When the adventurous and inquisitive Jonny Quest and his adoptive brother Hadji make a startling discovery in the swamplands of Florida, they are pulled into an epic struggle between the Space Rangers and a dangerous villain who threatens the galaxy. Now it's up to the combined forces of Jonny Quest, Space Ghost, The Herculoids, Birdman, Frankenstein Jr., The Impossibles, The Galaxy Trio and Mightor to stop him and save their universe! Hanna-Barbera has created some of the most recognizable animated characters.