What is the name of the main single-player campaign in Splatoon?

What is the name of the main single-player campaign in Splatoon? The campaign is called Octo Valley.

Octo Valley is the story-driven single-player campaign in the original Splatoon. The player takes the role of Agent 3, who joins Cap’n Cuttlefish and the New Squidbeak Splatoon to investigate the theft of Inkopolis’s Great Zapfish, the city’s main power source.

Progress takes players through Octarian territory, where they navigate platforming stages, fight enemies, collect Power Eggs, and defeat large Octoweapon bosses. Each level also contains a hidden Sunken Scroll, which provides background about the history, technology, and cultures of Splatoon’s world.

Several answers look plausible because later games use different campaign names. Hero Mode is a general label often associated with Splatoon’s story content, while Octo Canyon is the campaign setting in Splatoon 2. Octo Expansion is paid downloadable content for Splatoon 2. Those names belong to related modes or later releases, but the original Wii U game’s campaign is specifically Octo Valley.