Captain Jack is the true story of irascible and irresistible Captain Jack, a Whitby sailor with antipathy for authority, appeal to the ladies and a great respect for his predecessor Captain Scoresby, who sailed from Whitby to the Arctic in 1791. For Captain Jack, Scoresby is Whitby's true hero. Not Captain Cook whose statue stands overlooking the town. On the two hundredth anniversary of Scoresby's first trip to the Arctic, Jack resolves to follow him there and place a plaque. But before he can assemble a crew or provisions, Inspector Lancing of the Department of Transport finds the vessel unseaworthy and ties her up in red tape. This doesn't stand in Jack's way, assembling a motley crew, in the persons of Phoebe and Eunice, two elderly warring sisters; Emmett, a hen-pecked unemployed holiday maker; Andy, the Australian hiker and Tessa, the local lass who stows away to be with Andy - the man of her dreams, the Captain has everything he needs. With his old friend Barbara running communications from the local caravan park and the fishing fleet to escort them out of the harbour, right under the harbour master's nose, the adventure begins.