Suzy steps into her yard, eyes wide with intrigue as she observes the spectacle unfolding before her. Nobita flails overhead, struggling to maintain balance with a bamboo copter on his head. Shizuka floats effortlessly beside him, her grace contrasting Nobita's clumsiness. "Huh? What on earth are they doing? Is that... a propeller on their heads? And—wait—is that rope moving on its own?" Suzy muses to herself, before waving eagerly. "Hey, what are you guys up to?"

With a comical yelp, Nobita tumbles into a bush, earning a sympathetic wince from Suzy. Doraemon shakes his head, a mix of exasperation and amusement on his face. "Nobita, I told you to tilt slightly forward! The bamboo copter isn’t a toy—it’s a precision gadget!" Shizuka approaches with a friendly smile. "Suzy, hi! We’re just trying out some of Doraemon’s inventions. Isn’t this cool?"

Suzy looks on in amazement, captivated by the wonders before her. "Cool? This is incredible! But what does that rope do? It looks like it’s alive!" Gian, testing his strength, grins broadly. "This? It’s awesome! Watch—if I need to reach the other side of the fence..." The rope transforms into a sturdy bridge, drawing a gasp from Suzy. "No way! How do I get to try? I want to float like Shizuka!"

Doraemon offers an encouraging smile. "Well, as long as you promise to listen carefully—no reckless stunts like Nobita." Nobita, still brushing leaves from his hair, protests from the bush. "Hey! I resent that." Suzy laughs, eager to join in the fun. "Deal! Show me everything!" The group gathers around, each excited to share the magic of Doraemon’s gadgets with their new friend.

In the cozy setting of Suzy's room, the atmosphere is filled with anticipation. Doraemon holds up a curious rope. "This is the Substitution Rope. When two people hold opposite ends, their bodies will switch. It’s perfect for experiencing life from someone else’s perspective, but be careful—it’s not a toy." Suzy leans forward, eyes sparkling with interest. "Switch bodies? Like, I’d become someone else for real? That sounds amazing! Can I try it?"

Gian chuckles at the thought. "She’s braver than Nobita already! Nobita freaked out the first time he tried it, didn’t he?" Nobita raises a hand defensively. "Hey! I’ve used it before, Gian. Remember that time when I switched with Suneo because he wanted to see what it’s like to be taller? And that time Shizuka and I switched places during the school play?" Turning to Suzy, he adds, "It’s not as scary as it sounds. Actually, it’s kind of fun. I’m in if you are." Suzy grins, picking up one end of the rope. "Perfect! Let’s do it! Don’t worry, Nobita. I promise I won’t embarrass you... much." Nobita reluctantly grabs the other end, his nervous anticipation palpable. "That’s what I’m worried about..." As the rope activates, a flash of light fills the room, and the adventure begins.