When JoJo and Gran Gran visit the beach, JoJo is surprised to find the sea isn’t there anymore! Gran Gran explains that the sea is there, but it’s just further away as the tide it out, making it the perfect time to go beachcombing. Together, they see what interesting things they can find. JoJo learns all about fossils, as well as the people in the past who helped discover ones that are millions of years old, hidden within the beach. JoJo even finds a few special things of her own!