"Dive Olly Dive!" follows the fun-filled underwater escapades of Olly and Beth, two young, unmanned research-submarines-in-training. Under the guidance of their human supervisor Deep Sea Diver Doug, at the research facility, they discover the marvels of the world they live in. Often distracted from their assignments by the abundance of adventure under the sea, there is a quest behind every wave and a lesson to be learned from every experience.