Mike Flood and Helen Flood are having their anniversary party, but a storm and a power cut end up causing a fire and Station Officer Steele to bump and hurt his nose.

Norman Price and Trevor Evans discover an ammonite on the beach which inspires Norman to create the illusion of real dinosaurs for James and Sarah. James chases the sound of Norman's "dinosaur growls" into a beach cave where both boys become stranded by the rising tide. Meanwhile, Sarah is stranded on a rock. Sam and Penny come to their rescue.