THE BLOCKBUSTING CONCLUSION TO THE UNIVARSELY BESTSELLING BUM TRILOGY!Zack Freeman and his bum thought their world-saving days were over - that is, until they are attacked by an army of Great White Bumosaurs from 65 million years ago!Along with some old friends, they must travel back in time to save the world - again - from the pongflict to end all pongflicts: Bumageddon!