Betty Jo is giving up baseball to devote her life to science. The family finds out that she has a crush on Roland Barrett, her new science teacher. Dog brings home a large animal bone which Betty Jo takes to Roland. Roland is very interested in the bone and would like to find out where Dog got it from. Dog brings home more and more bones and Roland believes they could be from a brontosaurus. The family starts to believe the bones are buried below the hotel. Kate is not thrilled when they start digging a hole in the lobby floor. Clarence McGill, curator for the Pixley museum, comes to the Shady Rest. It seems the museum has been closed for repairs. Clarence caught Dog sneaking in and stealing the bones from the baby brontosaurus skeleton.