Grandpa Bill: We'll be back soon.
Mom: Enjoy your walk!
Sam: They finally left!
Grandma Ruby: Now we can get ready for the party!
Mom: Dad went to get balloons.
Mom: Can you hang up streamers?
Sam: Sure. I'll make posters too!
Dad: Grandpa called. He's on his way back with Lilly.
Mom: Time to hide, everybody!
Sam: Come on, Lucky. Let's hide here!
Grandma Ruby: I see them coming!
Tia: Shh! He'll hear us!
Grandpa Bill: We're home!
Sam: Not yet, Lucky. No, Lucky! Stay!
Lucky: Woof! Woof!
Sam: Oh Lucky!
Grandpa Bill: What's all this?
Everyone: Surprise!
Grandpa Bill: Wow! Thank you!
Lilly: Ga-pa . . . Ga-pa . . .
Sam: What, Lilly?
Lilly: Ga-pa! Ga-pa!
Sam: "Grandpa!" That's what she's trying to say!
Mom: Her first word!
Grandpa Bill: And it's "Grandpa!" What a birthday party!