A spate of petty crime plagues the town of San Lorenzo and Puss just can't put his paw on who's to blame. In a bid to stay more vigilant, he takes Artephius' magic potion and things take a turn for the strange. Later, the circus comes to town but these clowns look pretty sinister and it's not long before Puss is locking swords with his old enemy El Moco in the spooky Hall of Mirrors!