This episode starts with Tsubasa informing the members about the current situation on Tundrastar, and how DES is not holding back. An aerial concert on the Flying Get is too risky, but Tsubasa assures the members that they will find a way to hold a concert on this planet, especially with the help of the WOTAs, who are currently asking local supporters for help and gathering intelligence on any possible weak points in DES' security. Tsubasa thanks the WOTA for their work, and one WOTA is particular excited.
It seems that the WOTA on the left is a huge Mariko-sama fan. But Tsubasa terminates the transmission before the WOTA finishes his sentence. The understudies are slightly confused by a WOTA calling Tsubasa "Mariko-sama." Tsubasa tells the successors to double-check their formations, while the understudies are to get changed and start warming up. Takamina tells the girls to show some spirit, but Tsubasa quickly points out Takamina's condition.
Tsubasa points out that it may be the only time AKB0048 will get to perform on this planet, and so it is important to show the most spectacular concert ever. Takamina is not well enough to be able to fulfill that role, so Tsubasa tells Kanata to replace Takamina in the concert. Of course, the successors and the understudies are in shock, but for two different reasons. (I think it is evident that Takamina wants to perform because she does not want to give up her dream to Kanata.)