Chase finds he has loose tooth, but is terrified of going to the dentist to have it checked out. Meanwhile Alex is refusing to go to the dentist for a check up because of his own fear of going to the dentist, forcing Mr. Porter to call the PAW Patrol. Wanting to help Alex overcome his fear of going to the dentist, Ryder and the Pups must overcome their own fears in order to encourage Alex to do the same, which forces Chase to face his own fear of the dentist.