After several false starts to get out on a picnic Bing and Flop are finally ready to leave - when it starts to rain. Bing is very disappointed but as they unpack the wheelie bag he realises they can have their picnic indoors instead.
Bing and Flop are getting ready for a picnic. They have everything they need; sandwiches, drinks, cookies and even underpants. Just as they're about to leave with Wheelie, it starts to rain and Bing is very disappointed. Will they still be able to go for a picnic, or will the rain stop all the fun.