Big Bob, the bell from the church tower of Reverend Timms' church has been away to get mended. The children have prepared a special bell-ringing tune - Big Bob is coming back to Greendale. Pat has to deliver it to the church in time for the installation people to pop it in the bell-tower. But what started as a windy day turns into a gale, trees are blown down and the bell people can't get through! Pat needs to take to the air to make sure Big Bob Bell gets home in time for the children's song to triumph!
