The characters enter the "IGO Tournament" to win the legendary Carat Sizzled Cattle meat .
As the original HorribleSubs website faded into history, its methods lived on through successors like SubsPlease, which continues the practice of ripping from simulcasts today.
The episode is pure fan service, featuring friendly rivalries, absurd eating contests, and an eventual team-up where Luffy (Gear Third), Toriko (Twin Twin Kugi Punch), and Goku (Super Saiyan) combine their signature attacks to defeat a deep-sea monster called the Akami. The Role of HorribleSubs
The mention of "HorribleSubs" likely refers to the era when this episode was not available on official platforms. Because it was a "Dream 9" special celebrating Toriko’s anniversary, licensing issues kept it off Crunchyroll and Hulu for a decade, making fan-sub groups the only way for Western audiences to see it.
Toriko, Luffy, and Goku are invited to participate in the "ICG Gastronomy," a tournament where the winner gets the "Sea's End," a incredibly rare and delicious fish.
If you want to know before or after 590, I can provide a guide.