Under the Olympic Cauldron

"Under the Olympic Cauldron" is the eighth chapter of the Story Mode in Mario & Sonic at the Olympic Games Tokyo 2020.

Plot

Bowser and Dr. Eggman are still discussing what the gold medals are used for when Sonic appears next to them, trying to find out what they are talking about this time. Dr. Eggman lies that they are coming up with strategies for winning in the next event, and they then leave. Sonic determines that they cannot be trusted and leaves with Mario. The two manage to trail them to Nippon Budokan, where Bowser is preparing himself for the Judo event so that he may win a gold medal. Dr. Eggman believes that since Bowser is a heavyweight, neither Mario nor Sonic will be able to beat him, but Sonic is able to win regardless. Afterwards, Dr. Eggman decides that he and Bowser should split up for now and devise a new plan at an undisclosed location. Before they leave, Bowser teases the heroes by saying the gold medals will not be enough to get them out. Sonic becomes suspicious of this statement and tries to find the location at which the villains will meet. At the nearby Tokyo Roads, the two heroes reunite with Toad, who says that someone who looked like Dr. Eggman left in a red taxi. With his speed, Sonic chases after the taxi and manages to stop it before it can reach its destination; however, he then discovers that its passenger was actually a Picky who was "hired" by Dr. Eggman to impersonate him in the taxi (although he never actually got paid). After the Picky mentions a big flame, the heroes deduce the real Dr. Eggman's location and find him at the National Stadium, lurking in a hidden area in the sidelines with Bowser. They decide to stay and eavesdrop to find out what they are planning.

Locations	Challenges	Events	Minigames	Party members gained	Guests unlocked
Nippon Budokan	Sonic vs. Bowser	Judo	N/A
Tokyo Roads	N/A		Highway Chase	N/A
National Stadium	Only visited to progress the story