The Secret of the Fog
Episode number	Heroes Episode 2
Entry characters	Heroes
Plot	At the museum, Mario and Sonic defeat another set of imposters, then press on to stop the fog.
Location	British Museum
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The Secret of the Fog (also referred to asHeroes Episode 2 andHeroes 2) is the second Heroes episode in the Story Mode of theNintendo 3DS version ofMario & Sonic at the London 2012 Olympic Games. The episode is unlocked after completingMario and Sonic, and unlocksWaluigi's Ambition,Wario's Scheme,The Banana Incident andCorner the Koopa King! upon its completion. This episode's completion is required to unlock the Story Mode cleared badge.

Plot[edit]

Mario,Luigi,Sonic andTails run off into thePhantasmal Fog, leavingToad behind. Toad calls for them to wait for him and the group returns, with Tails apologizing for leaving Toad behind. Noticing that the fog is particularly thick, the group look around forFog machines. Toad walks intoEggman Nega while searching for fog machines, and mistakes him forDr. Eggman, which scares Toad. Eggman Nega approaches the group, and Tails asks him if he has been causing the fog. Eggman Nega explains that he has been operating the machine as a favor for Dr. Eggman, and Tails and Toad ask him to stop it, which he refuses to do. The group then challenges Eggman Nega to an Olympic event, and he accepts, promising to show them the location of the machine if he loses.

After losing the event, Eggman Nega tells the group that they can do whatever they please with the machine before disappearing, although he does not give them its location. Toad suggests that they head in the direction that Eggman Nega came from, and the group find the fog machine. Mario and Sonic destroy the machine byGround Pounding and Homing Attacking on it respectively, clearing up the fog. Tails suggests that they head inside theBritish Museum to look for clues, and the group goes into the museum. Tails quickly manages to find out that Dr. Eggman visited the museum and checked out a book in the library on archaeology, which describes aFog urn that contained the Phantasmal Fog that was found at a ruin. The urn had been on display in the museum but was recently stolen, and Tails believes that Dr. Eggman had something to do with it.Espio arrives and interrupts the group, asking them to help him asBowser and Dr. Eggman's minions have been causing trouble around London.Charmy arrives and tells the group that minions are causing trouble in four different places, and the group decides to split up and investigate separately. They all head off in groups towards different Olympic venues, with Mario and Toad heading one way, Luigi and Charmy heading in another, Sonic heading in a different direction and Tails and Espio heading off to the last venue. The group agree to meet back at theMain Stadium when they've each stopped Bowser and Dr. Eggman's minions.

Challenges[edit]

Names in other languages[edit]

• Mario & Sonic at the London 2012 Olympic Games Story Mode episodes

• Articles with unsourced foreign names