The Octonauts are a crew of cute animals who love to explore the big blue ocean. From their underwater base, the Octopod, the eight intrepid friends are always ready for fun and excitement!
It was a sunny day under the South Pacific Ocean when... ALERT! ALERT! ALERT! The Octonauts spy what appears to be an underwater rainbow. Perhaps there is gold at the rainbow's end? The Octonauts set off to catch up with the rainbow and find out, but it keeps disappearing and re-appearing somewhere else, and is that giggling they can hear? Dive in for another exciting underwater adventure!