Vanessa: (Enters the backyard) Hey, guys. What are you doing?
Phineas: We're building a time machine!
Vanessa: A time machine? Really?
Ferb: Yeah. We're going to go back in time and see the dinosaurs!
Vanessa: That's so cool! Can I come?
Phineas: Sure. The more the merrier!
Suzy: (Enters the backyard) Hey, guys. I heard you were building a time machine.
Phineas: Yeah, we are. Want to come with us?
Suzy: Sure! I've always wanted to see the past.
Vanessa: (Looks at Suzy) Hey, you look familiar. Have we met before?
Suzy: (Looks at Vanessa) I don't think so.
Vanessa: I'm Vanessa.
Suzy: I'm Suzy.
Vanessa: It's nice to meet you, Suzy.
Suzy: You too, Vanessa.
The four of them get into the time machine and travel back to the past. They land in the Cretaceous period, where they meet a group of dinosaurs.
Phineas: Wow, look at all the dinosaurs!
Ferb: This is amazing!
Vanessa: I can't believe we're actually here.
Suzy: This is so cool!
The four of them spend the day exploring the Cretaceous period. They see all sorts of amazing dinosaurs, including triceratops, stegosauruses, and Tyrannosaurus rexes. They also meet some friendly cavemen.
At the end of the day, they get back in the time machine and travel back to the present.
Vanessa: That was the best day ever!
Ferb: I know, right? I'll never forget it.
Suzy: Me neither.
Phineas: Me four!
The four of them smile and high-five each other. They're glad they had the chance to experience the past together.