Series for pre-school children. Roly, Little Bo, Yugo and Migo all have their own best things but there are some things that they can share too. Little Bo visits her uncle, Roly Mo, in Fimble Valley every day and there's always something exciting to do during a visit. Roly gives Little Bo a diary of her very own. But what can she put in it? Yugo and Migo think they can help.