Mondo and Rockna's teacher, Ms. Loon, accidentally goes to Mon World with the knights. Teddyurnaut is on the fritz and mistakes Ms. Loon for a monster and Eccentro thinks she has a monster item. Mondo and Rockna find a castle full of talking cats and Eccentro attacks the castle and Ms. Loon with the Sonic Condor. The Mon Colle Knights merge with a Flying Stego to fight the Condor, but they will need the help of the cats and Ms. Loon to defeat it.