Fred is finding that treasure-hunting when you’re hungry is really hard. However, that doesn’t stop him and Pete finding a long, black-and-white-striped metal cone in the sand. They know it's treasure, but what kind? Suzy quickly identifies that it’s a horn that makes a loud noise. Suzy sends the boys off to a fishmonger, where Kay points out that it's a huer’s horn used to helped fishermen find fish. But how could blowing a horn help anyone find fish? Suzy rings on the Treasure Comm and directs Fred and Pete to visit a huer’s hut on the cliffs above Newquay.

There, they meet Karl, who explains that the horn was blown to indicate that the huer had seen some fish. Karl then shows Fred and Pete how the huer would use signals to get the fishing fleet into position. Fred and Pete decide to put this to the test. Unfortunately, the wind and a swarm of bees play havoc with Pete’s directions, but Fred somehow ends up back in the fishmonger, where he buys some Cornish sardines. Suzy rings up on the Treasure Comm and tells him that they’ll go well in a Cornish delicacy known as a stargazy pie. Show less