Diego's practicing his Super Catch when suddenly; he hears a cry for help. Some Cuckoo Birds are making fun of a Rhea cause he can't fly. Diego quickly reaches the Rhea and tells him it's okay that he can't fly cause there's lots of other cool things Rheas can do - like running super fast! Diego invites Rhea to be an Animal Rescuer for the day and together they set off to rescue a nest of Baby Cuckoo Birds. Along the way, Rhea protects some Rhea eggs from the Pumas, tip-toes up the Slippery Rocks, and finally makes it just in time to catch the Baby Cuckoos as they fall from their nest.