Cook and Line trick Captain HeyHo into thinking they can see into the future with the help of some 'mystic' pebbles they've found on the beach. Later in the cove, Cook and Line continue their sneaky fortune-telling joke, but it is not long before Captain HeyHo realises they have been tricking her and comes up with a plan of her own. The tables are finally turned as she predicts their own sloppy future!