- Written by Riku SanjoDirected by Kenzo Maihara
At a hospital, 18 women, (patients, nurses and doctors) fell victim after they said they wanted to meet Sho and fainted. The Special Investigation Unit investigate and finds that no sign of Heavy Acceleration particles detected. After asking an eyewitness, Rinna reveals that all victims heard a strange noise before they react and she is as well, surprising them. The eyewitness suspects a patient as the culprit, whom revealed to be a woman that Medic copied.
Elsewhere, Medic watches the investigation on the hospital from faraway as the plan comes in. Brain is curious of what she plans but Medic forces him to take care of her pet dog. At the Unit's office, Kyu reveals that in one of the hospital's surveillance camera, the patient was carried by Brain and Medic as well appears. Similarly, the unnamed woman and every victim show the same strange activity in some part of their brains. Meaning, the wave would synchronized to any successful emotional parts to a woman and made them faints. It is possible that their devotion had been targets, making Chase learn another meaning of love from Genpachiro. Shinnosuke and Belt spies Banno in the same tape as Go leaves to find his father. The rest of the team then investigates.
Medic disappoints that her plan goes slowly. Brain protests his cooperation to Medic again and getting turned into a Core as a punishment. Banno appears and forcefully attaches himself to Medic. As Mach arrives, Banno controls Medic and overpowers him but before he can deliver the killing blow, the Super Evolved Heart dashed in and removed Banno from Medic. Medic turns Brain back to normal and orders him to bring her dog away. Chase appears, uneven the odds, forcing Banno to escape. Chase suggest Heart to cooperate in order to defeat Banno but Heart refuses, having known how Chase as Protodrive in the Global Freeze attacking his race until Medic healed them along with a weakened Heart, allowing him to evolve and defeated Protodrive.
At the hospital, Go can't even believe her as a "goddess" to the Roidmudes, since she willingly killed her own kind in the past. As Go leaves to find Banno again, a stranger dashes in and reveals that he had saw the news. He reveals the mysterious woman as Misuzu Hatori, his girlfriend that gone missing since a year prior. The man introduced himself as Kazuya Igarashi, a ballet teacher, thus further cementing Medic's relation to Misuzu. Kazuya however has no idea of whom "Sho" is. 006 offers himself to attack Banno and assures that he will be a part of the Promised Number. Kazuya takes Misuzu to the outside as Chase learns more about romantic love from Shinnosuke. Genpachiro gives Shinnosuke a poster of a ballet dancing performance regarding Misuzu and discovers that both of them disappears from their sight.
Meanwhile, Brain takes Medic's dog on a walk, the dog leads him to Banno, 006 and six other Roidmudes as the two spies Banno killing all seven of them and used 006's homunculus as a main body for his ultimate form: Gold Drive. Deadheat Mach confronts Gold Drive but easily had the Zenrin Shooter and Signal Tomarle hijacked. Medic's dog pee on Brain's shoe, unintentionally exposes his cover as Gold Drive approaches him and asks for his help.
Medic chokes Kazuya and asks him about Misuzu until Drive Type Tridoron frees him. Drive theorizes that Medic wanted Misuzu so that she can evolve using her love emotion. Medic's dog approaches Misuzu, awakening her and simultaneously turns Medic as an open target. Chase was about to kill her but Drive stops him. Cancelling his transformation, Shinnosuke peacefully asks Medic what really happened as she likewise reverted to her human form.
- Bad Boss: After Banno slaughters his mooks, 006 simply laughs and dismisses them as cannon fodder. He dies shortly after.
- Butt-Monkey: Brain has pretty much lost all the menace he'd regained back when he was 001's subordinate. Medic bosses him around (even reducing him back into a Core when he disobeys), a dog pees on him, and the episode ends with him cowering in terror as Banno finds him and asks to have a quick word.
- Curb-Stomp Battle: Despite only being a belt (like Mr. Belt), Banno kills 7 Roidmudes, including 006, in a matter of seconds. 006 doesn't even have the chance to fight back.
- Banno delivers another curb stomp battle to Gou, who is completely outmatched.
- Death of Personality: Banno destroys 006's core, but leaves his body intact for his own purposes.
- Evil Doppelgänger: Banno is one to Mr. Belt after successfully transferring his personality into his own copy of the Drive Belt. He takes control of 006's body, becoming Gold Drive.
- Eviler than Thou: 006 laughingly dismisses Banno's destruction of Roidmudes 052, 053, 056, 058, 063 and 079. He's not laughing anymore when Banno kills him too.
- Power Copying: Banno absorbs and gains the use of the Tomarle Signal Bike when Mach tries to perform a Full Throttle on him, which incidentally also denies Mach the use of both the Signal Bike and the Zenrin Shooter. He tosses both aside after using them to defeat Gou.
- Smug Snake: After two episodes of being a badass, 006 is shown to be this once he directly faces a Drive Belt-inhabiting Banno. For all his boasting of killing Banno, achieving Ultimate Evolution or how his power equals Heart, his ambush plan only gets six Roidmudes killed and Banno directly shatters 006's core, killing him before can even reveal his evolved form.
- Transformation Is a Free Action: Averted. 006 begins to transform, but Banno nonchalantly kills him before he can finish. Considering how quickly Roidmudes can change form, that's really, really quick.
- Urine Trouble: Medic's found dog peed on Brain. Played for Drama after that, as his scream gave away him away to Banno.
- Villainous Rescue: Heart arrives just in time to rescue both Medic and Mach from Banno, who had hijacked the former and was stomping the latter into the ground.
- What Is This Thing You Call "Love"?: Chase had difficulty understanding the concept of familial love. The concept of a lover is likewise alien to him.
- Medic is suffering from a variation of this, as she loves Heart completely, and yet despite love being her unique emotion she is still unable to evolve. The events of the episode are her increasingly desperate attempts to figure out why her love isn't enough.
- Why Don't You Just Shoot Him?: Averted. Banno simply kills 006 while the Executive is boasting about how powerful he is.
- You Have Outlived Your Usefulness: Banno says this to Gou after thrashing him.
- The Roidmude Count: 27The Answer: Banno fused with the body of Roidmude 006.
Episode 4/4: When Did Eiji Tomari Arrive?
- To promote Kamen Rider Drive: Surprise Future, four one-minute clips detailing the plot of the movie will be shown after their respective episodes, this being the fourth.
Eiji successfully arrives in the past, but upon learning the date realises he doesn't have much time to change the events that would result in the Roidmude-dominated future. He rushes to where he knows Shinnosuke will be, but Dark Drive and the NEXTridoron arrive and being pursuing him.
- Tragic Keepsake: Eiji carries around the burned and charred remains of one of Shinnosuke's ties.
- The Answer: The 5th of August, 2015.
