The bears can't believe the weather is still dull and rainy. It's supposed to be Summer - and they're supposed to be able to play outside!
They were beginning to get really fed up until Crackers suggested that they invited some of their pals over to do something fun indoors.
When their pals arrived, Boo suggested that they could do a jigsaw. They have several which they haven't done yet, so they found some which looked interesting. The one which Crackers, Alfred, Oscar and Custard chose looked especially hard, as you can see from the pictures here.
For those of you who have never heard of jigsaws, they are pictures you can buy which have been cut into different-shaped pieces, and then you put the pieces back together again to make up the picture. The pieces fit together because some of them have tabs on them, which fit into holes in other pieces. If they fit perfectly, then you know that the pieces belong together. Some jigsaws might have 1,000 pieces! The bears only choose 200-piece or 300-piece ones as otherwise they would have to walk all over the jigsaw to fit their pieces in!