The Goseigers' leader Master Head advises them to return to Gosei World, but they opt to stay and locate the cloud's source before Alata convinces them to go public.
Complicating matters, they end up being framed for trespassing on the Prime Minister's estate before their ally Gosei Knight returns to save them before they get arrested.
Upon reaching the building, they find that nearly every human there is emitting the darkness in their hearts in the form of black mist, which is feeding the strange cloud, and that it is tied to Brajira's Bibi Bugs.
Before long, they discover the culprit is Sakai's aide, Yumeko Hoshino, a struggling actress who became possessed by the King Bibi Bug and willingly helped him seek revenge on the Goseigers.
Afterward, the Goseigers ensure Yumeko's safety and encourage her to continue following her dreams before successfully using their memory-erasing cards to remove all memory of King Bibi's attack and returning to their lives.