John sets out to the shops to buy some food and drink for a picnic. Rosie and Jim are hungry and want to have a picnic too, so they add their own items to John's shopping list without him knowing. Bearing in mind that John doesn't even like the items that Rosie and Jim added, they're afraid that John is going to be upset. However, John isn't overly upset after all, as he sees a family having a barbecue and gives them Rosie and Jim's items.