The Blocked Bridge
Episode number	Challengers Episode 1
Entry characters	Challengers
Plot	After clearing the fog from the Tower of London, Sonic and Tails find Tower Bridge fogged in!
Location	Tower Bridge
<<List of episodes>>

The Blocked Bridge (also referred to asChallengers Episode 1 andChallengers 1) is the first Challengers episode in the Story Mode of theNintendo 3DS version ofMario & Sonic at the London 2012 Olympic Games. The episode is unlocked after completingThe Ghostly Tower and unlocksThe Wind Master upon its completion. This episode, along with the other Challengers and Girls episodes, must be completed to earn the Story Mode 2 badge, and its completion is also required to unlock the Story Mode Cleared badge.

Plot[edit]

Sonic andTails arrive atTower Bridge and notice thePhantasmal Fog is also there, but is a different color to the fog at theTower of London. Tails suggests that there may be anotherfog machine around, and Sonic suggests that they go to find it. They head towards where the fog is thickest and meetYoshi who is glad to see them. He explains that he cannot cross Tower Bridge because the bridge is lifted and cannot be lowered as the fog is too thick. Yoshi suggests that they try to talk to the bridge operator, when the group notice a pair ofimposters ofShadow andSilver. They mistake them for being the real characters and ask them to help, but when they refuse to answer Yoshi, he challenges them to an Olympic event.

After defeating the imposters, Yoshi asks them to help again, though they both disappear. Sonic realizes that they must be imposters, and Tails explains to Yoshi what they already know about them. Shadow overhears them talking and asks them for more information, and Silver arrives confirming that he is the real Shadow, as they had also dealt with some more imposters. Tails explains about theBoo using the fog machine to produce Phantasmal Fog, and suggests that they search for another fog machine.Jet rides past on his Extreme Gear, causing Sonic, Shadow and Silver to chase after him. Yoshi and Tails decide to follow them, despite not being entirely sure what is going one.

Challenges[edit]

Names in other languages[edit]

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

• Articles with unsourced foreign names