Doug (David Tennant) and Abi (Rosamund Pike) take their kids on a family vacation. Surrounded by relatives, the kids innocently reveal the ins and outs of their family life and many intimate details about their parents. It's soon clear that when it comes to keeping a big secret under wraps from the rest of the family, their children are their biggest liability. Find out how the rest of the family cope and see if the holiday will end happily.
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