Charlie and Lola are having a day-trip to Marv's, but Lola is sure that it will be spoiled when it starts raining. She wanted to play in the park with Marv's dog, Sizzles, but it now seems that they're stuck inside playing rainy-day games. When Marv finds a box marked with promises of curing boredom with fun games, it looks like their luck may have changed.