The Big Brother Edition of the DGP begins with a special season premiere episode. After Ace and Neon make their grand entrance at the Temple, two new old players are introduced: genius quiz king Isuzu Daichi, Kamen Rider Nadge-Sparrow and athletic Ganaha Sae, Kamen Rider Lopo.
Despite Tsumuri’s protests, Game Master Girori explains to Keiwa and Neon that this special round will be a fox hunt. He will have his dogs corner the fox into a spot where the two of them can finish him off.
Ace wakes up with apparently no memory of the DGP. He leaves for his day of being a big star. Tsumuri tries to express her disapproval of Girori’s interference in the game, but he says it is necessary in order for the DGP to survive.
Tsumuri is still unsure that sabotaging Ace is the right thing to do. But the show must go on. At the temple, Tsumuri updates the players on the mechanics of this round. Keiwa offers his Driver to Ace so he can use it to reclaim his own. But Michinaga knocks Keiwa’s arm away to remind him this is a game. Win says Keiwa better forget about Ace if he really wants to win. Neon is sure Ace has something up his sleeve.
Ace asks his “dad” Girori why Game Master would want him eliminated, especially as he’s saved the world several times already. Girori says he has no idea. Tsumuri, watching from afar, flashes back to the green room when Game Master Girori said that the more Ace wins, the closer he gets to uncovering the truth about the DGP. Win realizes Ace must lose so they can erase his memory. Tsumuri is unsure if this is fair, but Girori says it is necessary for the DGP to survive.
Grandpa Tanba says he doesn’t want to be a burden to them youngins anymore. Keiwa protests, but Grandpa Tanba says all of them still have the rest of their lives ahead of them. All the potential and happiness are still waiting for them.
Ace asks Tsumuri if she really hates being his sister that much and she says absolutely. Papa Girori tells them to come in for breakfast and both he and Tsumuri ask why Ace is using this fake family to go digging around the DGP. Girori points out that his wishes so far have had no rhyme or reason. And his latest wish, to become a DGP staff member, is the most suspicious of all.
Tsumuri is creeped out by Ace’s new world in which he wished he would be a family with the DGP management. So now, Tsumuri is his older sister and Girori their father. Girori is appreciative of Ace wanting them to be family.
Tsumuri explains that they did not expect the Last Boss to survive the can kick, so it is still out there somewhere. Thus, the game is not over yet and the Jyamar Area is even expanding. The alarm sounds and the Last Boss eats the can, now making their mission even more challenging.
After Keiwa records his diary entry for the day, a worried Sara calls to check up on him as the Final Boss has begun attacking near her office. He advises her to stay out of the monster’s sight, but Jyamatos begin to chase her.