Sam wants to go out, but it's pouring rain, so Granddad says they need to stay inside until the rain stops. Sam drinks hot chocolate and reads his books and dreams of adventures while Granddad does some paperwork. When Granddad needs to mail his letter, it's time to go out--despite the rain and floods--and Sam and Granddad have a magical adventure. The follow-up to the acclaimed Snow, this is the second title in a four-book series based on the weather from creator Sam Usher.