Ned offers a school tour to incoming students and gets stuck guiding the overly rambunctious Palmer Noid. Meanwhile, Cookie tries to impress a girl by masquerading as an eighth-grader. Later, Ned debates whether he should participate in a biology dissection; and Cookie and Gordy leap into action to free a lab frog.

Ned comes to the rescue of his favorite elementary-school substitute teacher by helping him connect with middle-school students. Meanwhile, Cookie masquerades as a sub. Later, Ned lends a helping hand to a new student.