Great Uncle Bulgaria announces that as the young Wombles have kept the Common so very tidy they must have the day off.  After a few thoughts as to how to spend their day off, it’s decided it will be a picnic in a boat on Queen's Mere. Ahh, what bliss! To everyone, that is, but Stepney who doesn't find the idea of water at all appealing. Things take a turn for the worse with our boating Wombles when they get stranded on the lake … Do they manage to return to safety before supper?