"Pokémon Mystery Dungeon: Team Go-Getters Out of the Gate!" is a short anime special based on the "Pokémon Mystery Dungeon" video game series. The story centers on a human who wakes up transformed into a Squirtle in a world inhabited solely by Pokémon. Confused and disoriented, Squirtle encounters a group of Pokémon who form a rescue team dedicated to helping others in need. The team includes a Chikorita and a Cyndaquil, who are initially skeptical of Squirtle's abilities but eventually accept them as a member.

The plot unfolds as the team, now named Team Go-Getters, takes on their first mission: rescuing a young Caterpie who has gone missing in a nearby forest. The forest is a dangerous place, filled with hostile Pokémon and unpredictable terrain. As the team ventures deeper, they face numerous challenges, including battles with wild Pokémon and navigating the treacherous environment. Squirtle, despite being new to this world, demonstrates resourcefulness and courage, proving their worth to the team.

Throughout the mission, the dynamics between the team members evolve. Chikorita, initially critical of Squirtle, begins to respect their determination, while Cyndaquil provides steady support and camaraderie. The group's teamwork is tested as they confront a powerful Fearow, the primary antagonist of the story, who poses a significant threat to their mission. The climactic battle against Fearow highlights the importance of cooperation and trust among the team members.

The resolution sees Team Go-Getters successfully rescuing Caterpie and returning safely to their base. The experience strengthens the bond between Squirtle, Chikorita, and Cyndaquil, solidifying their commitment to helping others as a rescue team. The story concludes on a hopeful note, emphasizing themes of friendship, perseverance, and the value of working together to overcome adversity.