Uh oh! Kenny's in big trouble this time! Kenny filled The Big 1 with super-duper helium, and now it's way too light! He realizes this at the last second, and grabs the astroturf yard and holds on for dear life! But the plastic grass is starting to give way! Will this be the end of our hero? Will he break his solemn vow not to harm balloons to save his own life? Will his noms get cold before he gets to eat them? All these questions and more will be answered in the thrilling conclusion, "The Big 1!"