Pokémon Horizons: The Series, known in Japan as Pocket Monsters: Liko and Roy's Departure and Pocket Monsters: The Sparkling of Terapagos, is the twenty-sixth season of the Pokémon animated series and the first season of Pokémon Horizons: The Series, known in Japan as Pocket Monsters (ポケットモンスター, Poketto Monsutā). Directed by Saori Den and produced by OLM, the season aired in Japan on TV Tokyo from April 14, 2023, to March 29, 2024, and was later distributed in the United States by Netflix from March 7, 2024, to November 22, 2024. Daiki Tomiyasu served as executive director, with Saori Den as director, Dai Satō as script supervisor, Rei Yamazaki as character designer, Conisch as music composer, and Naotsugu Uchida and Akane Yamago as sound editors, replacing Ryōko Nashimoto. Bessatsu CoroCoro Comic and Gakushu Yochien are no longer credited as publishers, and Junichi Masuda and Ken Sugimori are no longer credited as creators.

The season comprises two story arcs. The first arc, "Liko and Roy's Departure" (リコとロイの旅立ち, Riko to Roi no Tabidachi), spanning the first 25 episodes, follows protagonists Liko and Roy as they embark on adventures with the Rising Volt Tacklers, exploring the Pokémon world, including the Paldea region introduced in Pokémon Scarlet and Violet. The second arc, "The Sparkling of Terapagos" (テラパゴスのかがやき, Terapagosu no Kagayaki), covering the final 20 episodes, centers on the protagonists researching Liko's pendant, revealed to be a Terapagos. Throughout both arcs, they are pursued by the Explorers, a mysterious organization.