Beaches up and down Britain are in terrible danger. A greedy trickster is polluting the seas - soon there'll be nowhere safe to swim. But, when SPUD discovers a mysterious underground secret, only he and STAR can save the day - and the seaside! SPUD is scatty and acident-prone - But good with gadgets... STAR is Super-smart and ready to pounce... Together they are SPY PUPS