Charlie and Lola decide to go on a picnic with their friends Marv and Lotta. Charlie and Marv have their own ideas on just what makes a great picnic, while Lola and Lotta have totally different ideas. One thing they all agree on at first, though, is that the rain that starts falling once their picnic is set up is definitely not a good thing. But with some imagination, they come with some great ideas for an indoor picnic.