Educational series for four- to seven-year-old children with learning difficulties, offering teachers, parents and carers a range of approaches to develop language and communication skills. Justin travels to Weymouth harbour to meet his friends Jake and Stuey. They look round the harbour and find a fishing boat, a lifejacket and a blue flag. Meanwhile, Mr Tumble is busy painting pictures of the boats and birds when he bumps into Grandad Tumble.