1x7 - The Super Mario Bros. Super Show!

Mario and the Beanstalk Desperate for cash, the Marios trade the royal cow for bean seeds. Princess scolds them, and accidentally sneees, blowing the beans into the yard. Overnight, they grow into a beanstalk. The next morning, Mario and Co climb the beanstalk, which takes them to a gigantic castle in the sky, which is occupied by Koopa, who's now giant-sized. Bats in the Basement The Marios can't seem to figure out that their current house guest is a vampire.