Miko has a school assignment to sew a plush doll for a student art show, but unable to sew, she asks Chikkun to pretend to be a doll that she can submit. Chikkun wins first prize and gets lots of attention from girls, which makes Dr. Bell envious. Dr. Bell makes a female penguin doll named Penko, and brings her and the rest of the plush dolls to life through voodoo, as part of a scheme to lead Miko to a dance party and to break Chikkun's heart.