In the commercial, Fuwa-chan and Terada are explorers who enter the world of New Pokemon Snap, taking photographs of Pokemon and exploring their ecology.
Here is an overview of the game, via Nintendo.com:
Explore lush scenery on unknown islands to snap photos of Pokemon in their natural habitats.
Seek out and take in-game photographs of Pokemon in their native environments in the New Pokemon Snap game, only for the Nintendo Switch™ system! You’ll even discover behaviors and expressions you’ve never seen before when you encounter and research lively wild Pokemon. You might see them patrolling their territory, playing, or lurking in out-of-the-way spots.
Investigate the mysterious Illumina phenomenon.
Travel to the islands that make up the Lental region. In this region, some of the Pokemon and vegetation will appear to have a special glow. Research these Pokemon alongside Professor Mirror as you explore dense jungles, vast deserts, and more! Your observations of Pokemon thriving in the wild may help unravel the truth behind the Illumina phenomenon. The Pokemon pictures you take will be used to build your very own Pokemon Photodex!
This new game brings the gameplay of the 1999 Pokemon Snap game for the Nintendo 64™ system to life on the Nintendo Switch system with unknown islands to discover and different Pokemon to see!
Photograph lively wild Pokemon in their natural habitats as you research and explore unknown islands. Hop in your trusty travel pod, the NEO-ONE, and journey through a variety of environments such as beaches, jungles, and deserts to capture previously-unseen Pokemon behaviors. You can even toss Pokemon a delicious fluffruit to catch their attention. Photos you take can also be used to fill out your very own Pokemon Photodex!
In the Lental region, Pokemon and vegetation have sometimes been seen to glow. Meet Professor Mirror and work with him to uncover the mystery of the Illumina Phenomenon. Your photos and observations may be key to learning about this strange occurrence.
New Pokemon Snap is due out for Switch on April 30 worldwide.
Watch the TV spot below (download MP4 here).