Mikey is convinced the doctor's office is crawling with MONSTERS-sneezy goo-slingers, sock-stealing sneaks, and needle-hiding creatures in lab coats! As his imagination runs wild, every checkup feels like a monster-sized mission. But with his mom by his side and his brave plush cat Whiskers in his arms, Mikey tiptoes inside¿ and discovers that what he feared most might actually be friendly, funny, and there to help him.