 Japanese title card · “Big Decisive Battle on Latitude 0!!” | |
| Series | Sonic X (ソニックX), TMS Entertainment |
| Season | Season 2 (2003–2005) |
| Episode | Season 2, episode 21 · no. 47 of 78 |
| English title | “Map of Mayhem” (4Kids) |
| Japanese title | 緯度０大決戦！！ (Ido Zero Dai Kessen!!, “Big Decisive Battle on Latitude 0!!”) |
| First aired (Japan) | 22 February 2004 · TV Tokyo |
| First aired (US) | 5 March 2005 · Fox Box / 4Kids TV (Fox) |
| Directed by | Makoto Moriwaki |
| Written by | Masahiko Shiraishi |
| Storyboard | Makoto Moriwaki |
| Previous episode | A Wild Win (S02E20) |
| Next episode | The Volcanic Venture (S02E22) |
MurasiaAdventure
Map of Mayhem is episode 21 of Season 2 of Sonic X and the 47th of the anime’s 78 episodes. In Japan it is called “Big Decisive Battle on Latitude 0!!” (緯度０大決戦！！). It premiered on TV Tokyo on 22 February 2004, and the 4Kids English version followed on Fox Box / 4Kids TV (Fox) on 5 March 2005. It was directed by Makoto Moriwaki and written by Masahiko Shiraishi.
Synopsis
A research ship, the Seahawk, sends out an SOS and vanishes after a mysterious galleon attacks it – with Topaz aboard. Meanwhile Knuckles has found what may be the oldest map in the world, and Eggman sends Decoe and Bocoe, disguised as mummies, to steal it from the museum.
Dr. Cadberry, the scholar looking after the map, tells the heroes that it shows the lost continent of Murasia and the “belly button of the world”, where chains of undersea volcanoes meet. When they reach the island there, Eggman’s huge galleon-shaped battleship rises from the sea and opens fire, and he explains his plan: stir up the volcanoes and destroy the planet.
Sonic attacks but falls into the water, and Chris dives in to save him. G.U.N. joins the battle in a flying fortress that turns out to be Eggman’s old Egg Fort, and when Eggman reveals that the Seahawk’s crew are his hostages, Rouge goes in to rescue Topaz. Sonic and Knuckles smash Eggman’s final weapon, but the doctor escapes into the volcano.
Key Moments
- The lost continent of Murasia and its ancient map.
- Eggman’s battleship rises from the sea.
- Rouge rescues Topaz and the Seahawk’s crew.
Trivia
- The Japanese title echoes that of Toho’s 1969 film Latitude Zero, and the episode is full of nods to it.
- On home video: Japanese DVD/VHS volume 12 (Victor Entertainment, 23 June 2004); 4Kids/FUNimation volume 10, The Beginning of the End (16 May 2006); the The Egg Moon, Emerl & Homebound Sagas DVD set (2009); and Discotek’s Sonic X Collection 1 (2016) and complete-series Blu-rays.
Watch the Episode
The full 4Kids English episode, uploaded by TMS Entertainment’s official “Anime! on TMS” YouTube channel (checked 6 November 2026).
Part of our Sonic X Season 2 guide. See the Sonic X series page for the cast, theme songs and home video.
Sources: titles, credits and air dates from Wikipedia’s list of Sonic X episodes and Sonic Wiki Zone, cross-checked with each other and with Luke’s original Sonic Scene episode table; synopsis written for Sonic Scene from the episode, Wikipedia’s summary and Sonic Wiki Zone’s plot notes; title card and screenshots via Sonic Wiki Zone, copied to our media library.