Lily and her family discover a surprise Great Grandpa Wallace left for them in the garage -- a mobile weather station that can fly! They embark on their first weather hunting expedition -- above the clouds.

The Hunters discover a stowaway in their picnic basket. The unknown guest, a dog, appears frightened so the family investigates the cause. As their new furry friend warms up to them, they gain a new member of the family in the process.

The Hunter's nice warm spring day is derailed when a cold snap suddenly hits. Worried about the low temperature's effect on outdoor plants, the kids band together to protect the gardens in their neighborhood.