Karl builds a spaceship but no one thinks it will fly. An unwelcome summer rain gives Michael a new perspective on fun.

Addy gets frustrated with Karl for not sharing a game. Karl receives a toy robot that isn't what he expected.

Karl and Michael feel badly after accidentally soaking Addy with water balloons. When Michael and Addy build a go-kart, Karl feels left out.

Michael is hired to pet-sit a neighbor's dog for the weekend. Things don't go as planned when the kids try to watch a lunar eclipse.

Addy feels sad after losing a cross-country race. Karl is unwilling to give up his favorite shirt, even though he's outgrown it.

Karl is afraid to visit a barber for the first time. Michael becomes determined to make the perfect paper airplane.

Addy looks forward to a peaceful painting session with Stillwater. Karl finally ties his shoes by himself but worries he won't be able to do it again.

Karl faces his fear of crossing a creek in the woods. Michael sees that Addy looks sad and wants to cheer her up.

Karl accidentally breaks a branch on Stillwater's cherry tree. The kids try to protect their sandcastle from being washed away.

Michael is upset when Karl trades a rare game card. A homemade snow scooter leaves Michael feeling frustrated.

Michael feels abandoned on Halloween when Addy gets invited to a friend's party, and Karl decides to stay in because he's afraid of ghosts.

While helping Stillwater make treats for the Winter Solstice Festival, the kids learn he plans to share some with a neighbor they're wary of.