Gilbert Gabby Dino Has Yellow Hearts is about a young dinosaur who is not allowed to play with the other dinosaurs at school because he is different. A kind bee he found at his magical secret place helps him with great advice and lets Gilbert Gabby figure it out on his own. He knows how happy he feels when he eats the tasty yellow flowers and how the yellow hearts fill him with joy. He decides that sharing this happiness will make the other dinosaurs as happy as he, and they will allow him to play with them. Toward the end of the story, Gilbert Gabby learns a valuable lesson.