Guest from the Depths

William Deep Jr. — a fearless conqueror of the deep seas — is how young Billy imagines himself while resting with his sister Shina on the schooner "Cassandra," which belongs to his scientist uncle. But this year, reality will surpass any fantasies — for the coral reef near which the "Cassandra" has anchored hides many mysteries. There are even rumors of a mermaid dwelling in these waters, and Billy becomes eager to catch her. But the amazing encounter with the guest from the depths will not bring him happiness...