达娜和她的小伙伴们继续在史前世界的新探险中,认识了新品种的史前生物和恐龙,开拓了视野。 It's the season opener of Season Three and the new baby is coming. While Mom and Dad are in the delivery room, Saara tries to keep Dana calm by asking her how different dinosaurs had their babies. While the girls go on a fantasy adventure back in time to answer that question, they get closer to the answer of another question - are they getting a baby brother or sister?