Cut to Muntz’s airship. Russell the DIY Rocketeer is hot on his trail.
Russell busts through a window on Muntz’s zeppelin only to be confronted by the dog pack.
They tie the kid up, and Muntz interrogates him, wanting to know where Carl is. Russell doesn’t tell him. Instead, he threatens to unleash all his wilderness explorer training. Let’s hope zoology comes in handy.
Carl and his house catch up to Muntz just in time to see Russell sliding down the airship’s ramp, tied to a chair. He swoops in and saves Russell from plummeting to the ground below.
Russell’s stoked that Carl came back for Kevin and can’t wait to help, but Carl orders him to stay in the house, which Carl and Dug tie to the airship.
Carl doesn’t want Russell’s help; he wants him to be safe. Aw. He does care!
Carl boards Muntz’s blimp, and Dug helps him find a way around the guard dogs, through an airshaft.
Carl and Dug find the room where Kevin’s being held prisoner just as the dog pack shows up below.
Alpha directs the pack to stay put in front of Kevin’s cage. Carl looks to Dug for advice; Dug helpfully gnaws on one of the tennis balls on Carl’s cane. Dogs will be dogs.
But wait—Dug’s given Carl an idea. Carl hops down on top of Kevin’s cage and gets the packs’ attention. He yanks a ball off his cane and taunts the dogs with it. Who wants the ball?
Turns out they all do. When Carl tosses the ball out into the hallway, all of the slobbering pups run after it. Carl shuts the door behind them.
The pack gets on the intercom system, all trying at once to tell Muntz that Carl’s got Kevin.
Meanwhile, Russell remains determined to help. He breaks out of Carl’s house, then falls onto the tethering cord, disconnecting the house from Muntz’s airship. Whoops.
While Muntz steers the airship and yells at his dogs, asking if anyone knows where Carl and Kevin are, he sees Russell slide by the window, his body pressed up against the glass, squeaking the entire way. Muntz looks like he just saw Bigfoot fly by on a hoverboard.
Change of plans: Muntz sends out a squadron of dogs in old-timey biplanes to shoot down Carl’s house. You know, the one that Russell’s dangling from as it flies away. The dogs fire darts at the balloons.
Back on the airship, Carl sneaks Kevin toward the exit. Unbeknownst to them, Muntz is right behind them. He snatches a sword from the wall and goes after Carl. One of the perks of living in a museum, we guess.
Dug bites Muntz in the leg. Muntz throws him through a door and closes it. Dug’s pursued by the pack.