Andy’s Mum is holding a fancy pants dinner and the band can’t wait… BUT UH OH there is a problem! She has no plates to serve her dinner on and she is desperate to show off her priceless gold dinner plates that went missing so many years ago. Stolen by Mum’s Great Great Great Great Grandad, who was an old sea captain, the plates went down with his ship and now rest at the bottom of the sea! She simply must get back them back for this special dinner. With the Rock’n’Roller in full submarine mode, off they go on an unbelievable underwater adventure. Will they find the plates? To have a chance they need the help of one of Mac’s oldest friends to get out of a spot of bother. How do you message the Loch Ness Monster for help? Sing a sea shanty of course!