Aboard a train to the Wild Area, Scorbunny stares out into the countryside before searching for Goh. It soon locates Goh and Ash eating in a dining car, but the boys are too deep in conversation to notice Scorbunny leaping up to get their attentions. Scorbunny walks off in frustration and takes some food off a nearby cart. After a bite it kicks the fruit away, however it strikes a passing waiter who loses his balance and tray of food.
The train stops at a station, where Goh and Ash get off. Scorbunny wakes up, but is too weary to hop off. It panics as soon as it spots Goh on the platform, but the doors seal shut and the train takes off again. Scorbunny eventually locates an open window and leaps to freedom. It readies itself before running on the tracks back towards the Wild Area station. Meanwhile, Goh approaches a concierge for more information about the Dynamax phenomena, and the concierge directs them to follow the red lights. After some exploration and snapshots, Ash and Goh soon come across a set of crossing signals. Ash considers if these lights are the ones described by the station concierge earlier, but Goh dismisses the idea.
They leap over the tracks and rush towards a napping Snorlax. Goh pulls out his Rotom Phone and begins recording details on Snorlax. After analysing Snorlax, the boys are left disappointed by the lack of interaction. Meanwhile, Scorbunny is thrilled to finally see Goh again and rushes over to greet him. However Ash and Goh are too occupied by Snorlax. Scorbunny responds by kicking a stone, which ricochets off Ash's head and knocks a Sitrus Berry out of a tree and directly into the sleeping Snorlax's mouth. Snorlax chews the fruit and spits out the seed before returning to its slumber. Ash tries to nurse his sore head and as he turns to Goh he spots Scorbunny. Ash and Goh instantly recognize it as the very same Scorbunny they met yesterday, and are pleased to see that it has cleaned itself up. As Scorbunny affirms that it has been following, Ash suggests it might want to join Goh's team. Goh, however, apologizes to Scorbunny, admitting that he wants his starter Pokémon to be Mew. Scorbunny is disappointed and bows its head in response.
Suddenly, mysterious red lights appear and float towards Snorlax. A burst of energy then engulfs Snorlax, causing it to swell to enormous proportions before it emerges in its Gigantamax form. Goh is quick to point out that Snorlax is now blocking the train tracks, adding that a train is due to pass through in the next eight minutes. Ash has Pikachu use Thunderbolt, but Snorlax is only mildly disturbed and fires off a Hyper Beam in its sleep. Ash resorts to yelling, but quickly shelves that idea when Goh points out the giant berry growing from the tree now sprouting from Snorlax. Goh figures that Snorlax will wake up if they feed it the berry. Ash is all in and begins to climb on Snorlax and onto its tree. Goh clambers up with some struggle, before ordering Ash to drop the berry. However, Pikachu's Iron Tail fails to cut through the thick stem and now only four minutes remain before the train arrives. Ash leaps onto the berry, and using his added weight he swings the berry as Pikachu attacks the stem with a fury of Iron Tails. The berry drops as planned, but gets caught up in the growing shrubs. Goh tries to push the berry, but his might isn’t enough. As the crossing signals sound, the situations grows tense. Luckily, Scorbunny leaps in to help. Goh notices Scorbunny's feet digging into the ground as it tries to push the berry. He recalls Scrobunny's powerful kicks and orders it use Double Kick. Scorbunny follows suit and the force is enough to cause the berry to rolls towards Snorlax's mouth. Snorlax leaps upwards to grab the berry, and as it plummets, the shockwave stops the approaching train.
Goh realizes Snorlax must have also swallowed Scorbunny, but he is reunited with his friend after Snorlax returns to its usual form. Goh thanks Scorbunny for its help, pointing out that its Double Kick saved the train. Scorbunny is overwhelmed by the compliments, though prepares to walk off in mind of Go’s earlier words. Goh looks on for a moment, but asks Scorbunny to wait. Scorbunny turns around and is pleasantly surprised when Goh announces that it will be his first Pokémon. Goh throws a Poké Ball, but the curve ball shot misses its mark. Scorbunny resorts to kicking the ball to complete the capture. After the ball stops rocking, Ash affirms that Goh now has Scorbunny. The Pokédex function updates its system on Scorbunny, making Goh realize he has finally caught his first Pokémon. Goh calls out his new recruit and exchanges a high-five to commemorate the beginnings of a new friendship.
Ash and Goh later return to the Cerise Laboratory. They update Professor Cerise on their adventures with a Gigantamax Snorlax. Yamper runs in and starts barking at Scorbunny, though Pikachu quickly settles the situation. Scorbunny is left feeling jealous of the Electric duo's playful friendship, so it returns to Goh for comfort. Cerise is confused to see Scorbunny. Goh grins as he affirms that Scorbunny is his first Pokémon.
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