The girlfriend of the student that the Bugsters were after has contracted the Game Disease. Hiiro transforms into Brave and succeeds in separating the Bugster from the girl.

The fact that Hiiro has betrayed Emu weighs heavy on the members of CR. If Hiiro is working with Masamune, then there can only be one reason for it. With everyone on the ropes about the situation, suddenly both Parado and Graphite show up in CR! To counter against Cronus, they ask Kuroto about Kamen Rider Chronicle's final boss, Gamedeus, the only being who can defeat Cronus. Just then, Brave confronts Ex-Aid as he is responding to an emergency call...

Apparently Hiiro wasn't the only accomplice that Masamune had in the palm of his hand! Cronus suddenly summons Kamen Rider Lazer Turbo Level 0 into the fight! In order to further expand the presence of Kamen Rider Chronicle around the world, Lazer Turbo stands before the Doctor Riders in an attempt to keep them from ending the game! Much to the shock of everyone, Kamen Rider Lazer Turbo finally reveals his identity...

Genm Corp. announces a new addition to Kamen Rider Chronicle, the "Cronus Capture Quest", and despite knowing what dangers lie ahead, countless new players join the game! Meanwhile, Emu is still reminded of the message Kiriya said to him before Masamune took him away. Kuroto completes an invincible golden Gashat holding an unbelievable amount of hidden power! Ex-Aid and the others rush to stop the "Cronus Capture Quest" as Brave and Lazer Turbo stand in their way once again...

Ex-Aid finally went Muteki and was able to beat Cronus! Masamune, who does not like the fact that Ex-Aid was able to attain a power that exceeded his control, angrily forces Hiiro to work for him as he claims Saki as a hostage! Brave forcibly renews his resolution, and this time he is able to transform into Legacy Gamer Level 100! Emu is more confused than ever, while Taiga is the only one who truly understands just how painful Hiiro's decision truly is…

Graphite mercilessly attacked the body of Taiga which forced him out of his transformation! The injured Taiga has been rushed to the hospital immediately, but there is a high possibility that his heart has been damaged. Moreover, it seems that it would take an expert-level of surgical expertise in order to save his life. After returning to Masamune, Hiiro's father and Asuna make an urgent phone call. The director asks Hiiro to perform Taiga's surgical operation. Just what decision will Hiiro come to in the end?