Children's animated series. Postman Pat and his cat Jess deliver the post to residents of Greendale. Meera and Julian decide to set up a lost property office and find all sorts of 'lost property' outside people's houses. Pat delivers the post, but important medicine for Amy's patients is lost when Jess and Bonnie play a chasing game in the back of the van. Pat attempts to retrace his steps to find the medicine and meets a number of irate villagers, all of whom are reporting lost property to PC Selby.