Tank Triceratops is really excited to show Buddy, Tiny, Shiny, and Don his favorite picnic spot, but when they arrive, the spot is overrun with a whole herd of Triceratops. Tank and the kids try to find another place with a little more privacy (and a lot less Triceratopses), but no matter where they go, the herd follows them. Will Tank be able to find a quiet spot without the herd, or does the herd have a good reason for following Tank around?