To take preventive measures against further atrocities caused by the Unidentified Life Forms, the police introduce the G3 unit. But when it is time to fight the murderous Pantheras Luteus, the G3 falls short to the power of Agito.
After the murders of the Saeki family, Makoto Hikawa decides to do some digging into the photo he found of the son, Nobuhiko. Halfway through his investigation two more "Unknowns" appear.
Agito turns on G3 after defeating Pantheras Albus and Pantheras Tristis, damaging the G3's suit severely. The police have no choice but to label Agito dangerous.
The O-Parts lab finally unwound the ancient puzzle, revealing a mysterious DNA model, and they try to replicate the DNA.
The O-Parts lab has been disassembeld after the DNA baby escaped, leaving more questions than answers.
After being saved by Agito from the two snake Unknowns and seeing Ryo Ashihara accidentally change into Kamen Rider Gills Mayumi Kitahira decides she must put distance between herself and her former boyfriend.
After defeating one of the Snake Unknowns Ryo Ashihara goes into shock due to the recoil of his powers and is abducted by the DNA child.
Mana Kazaya distances herself with Shouichi while she sorts out what she saw in his memories.
The OverLord has fully matured and vanishes, leaving a frightened Gills wondering why he should be so scared.
Shoichi Tsugami has been taken into questioning for the murder of the woman he was suppose to meet, Tomoko Miura. In order to prove his innocence Mana Kazaya must use her psychic abilities to find the true culprit.
Toru Hojo flees the battle with the octopus Unknown after his attacks fail to work, abandoning the G3 suit and leaving Agito to defeat the Unknown.
Due to his excellent deduction work and saving a woman, with some help from Agito, from a pair of Unknowns Makoto Hikawa is once again instated as the operator of the G3 unit.
The OverLord has been declared mentally unstable and was moved from the jail cell to a hospital, where he is paid a visit by a mysterious man.
G3 comes to the rescue after Shouichi is stung by the scorpion Unknown. The diagnosis is that Shouichi only has 24 hours to live, he decides to live out his day normally telling Makoto Hikawa that he just dosen't feel like he is going to die.
With the help of The OverLord Shouichi defeats the scorpion Unknown and lives to see another day.
The Misugi household's new housekeeper, Aki Sakaki, is confronted by Ryo Ashihara because her name is in his father's notebook. Unfortunately for Ryo she claims she knows nothing, but he doesn't believe her and follows her.
Ryo Ashihara is ever persistent and keeps pushing Aki Sakaki about what happened to his father on the Akatsuki-go.
Kamen Rider Gills is left for dead after being assaulted by Toru Hojo's firing squad and G3's attack.
Shouichi decides to take over the bakery he works at when his boss, Sashi Hanamura, is murdered.
Ryo Ashihara remains in critical condition but is being cared for by Shoichi Tsugami. The OverLord imparts a portion of his power to Tetsuya Sawaki after Tetsuya sees what humanity has to show him.
Thinking that Ryo Ashihara is dead Aki Sakaki goes after the Agito Capture team for vengeance. Ryo awakens to a voice in his head and finds Shoichi Tsugami living in Aki's house.
Seeing Aki Sakaki dead in the hands of Agito, Ryo Ashihara mistakenly believes he killed her and attacks Agito as Gills. Agito, Gills, and G3 have a heated battle resulting in the G3-System being damaged far beyond repair.
After his body is pushed to the limit Makoto Hikawa is forced to give up his position as the G3-X operator. Sumiko Ozawa feels that Makoto uses too much force and that he will not sync with the G3-X's AI system, she instead needs a much more relax and carefree person... like Shoichi Tsugami.
After going berserk, destroying the V-1 system and the second bee Unknown, and then attacking Agito, Makoto Hikawa faints in the G3-X system. He is hospitalized and comes to the realization that while the G3-X system is perfect, he has many flaws. Makoto turns to the only other person he sees as a suitable candidate for the G3-X, Shoichi Tsugami.
Makoto Hikawa takes full responsibility for going berserk after seeing Shoichi Tsugami effectively deal with an Unknown in the G3-X suit. The police cheifs recognize this and decide to have Toru Hojo operate the G3-X once the V-1 system is disbanded.
Agito is defeated by Gills, leaving him to drown. Shouichi doesn't die but regains his memory and then proceeds on a trip to find out just who the real Shoichi Tsugami is.
After being saved by Ryo Ashihara, Masumi Sekiya and Katsuhiko Sagara decide that Gills possesess too much of a threat to them and must die.
A few weeks before Episode 27...
A victim of an Unknown attack happened to be a safe cracking thief whose accomplise was his younger brother. The police figure that if they can find the younger brother than they can protect and arrest him. Makoto Hikawa recruits Mana and Shouichi to help in the effort.
Toru Hojo decides to take Nobuyuki Kazaya's murder case saying that it wasn't an Unknown that killed him but a human with telekinetic powers.