Taking a break at a Pokémon Center on their way to Driftveil City, our heroes meet Robert, a young Pokémon Photographer who is thrilled about the opportunity to photograph Pikachu! He shows our heroes some of his other photos, plus a few his grandfather took. Iris and Cilan notice something amazing in the old photos—a single shot of four Sawsbuck, one from every season...together at the same time! Robert says he wants to find where that mysterious picture was taken, and our heroes offer to help.
Climbing a mountain, they spot a Deerling, which Robert knows might lead them to Sawsbuck. But when a thick fog rolls in, Ash and Robert are separated from the others. They decide to stop for the night after an unsuccessful search for the Deerling, who ran away when the fog appeared. The next morning, they are awakened by the same Deerling, who wants them to follow it.
As they walk, Robert accidentally disturbs a group of Amoonguss, who attack him with poison! Ash vows to get him off the mountain for some medicine, but as the fog rolls in once again, the Deerling returns, this time followed by a Sawsbuck. The two Pokémon lead Ash and Robert to the same hot spring where Robert’s grandfather took his photo—and where the four seasons of Sawsbuck have gathered once again! The warming light from the spring heals Robert immediately, and he manages to snap the photo he’s been seeking before the Sawsbuck disappear into the fog once again.
Ash and Robert are then reunited with Iris and Cilan, and are surprised to discover that the strange fog apparently affected time—while Ash and Robert spent the night on the mountain, Iris and Cilan insist they’ve only been looking for them for ten minutes!
Robert takes the opportunity to show off his prized Sawsbuck photo, and although the image is shrouded in fog and hard to see, he’s quite happy with the experience. Robert bids our heroes farewell, and their journey to Driftveil City continues!