Four teenage travelers traverse the universe saving those in need, though not always in the way you'd expect... in fact, never! Along the way they meet aliens, phantoms and other interdimensionals - including everyone's favorite, Catbug. Sometimes they even meet themselves!
In Catbug's Treasure Book we see the world from his perspective. A kind of scrapbook, the pages are filled with memories and souvenirs of his adventures with the Bravest Warriors, along with his playtime imaginings. There are also allusions to past episodes (Danny's eyebrows taped to a page, for example), and hints at secrets not yet revealed.