Six years after Ada escapes the city with Wesker, Krauser, an old friend of Leon and Wesker's, calls for her assistance to retrieve a "Las Plagas" sample from a religious cult located in a mysterious town in Spain. She thinks about this as she looks in the mirror at the scar she received from her near death experience in Raccoon. Sadly, she tells herself that she is no longer Ada Wong, and prepares for whatever obstacles await her.
An Inside Ally
In Spain, sometime before Leon's arrival, Ada helps remove the plaga egg from the researcher Luis Sera's body before it hatches. She then has him fetch the sample she needs to complete her mission. Once he succeeds in getting it, they'll make contact. A little after this arrangement, Leon arrives. Ada sees him being attacked by the Village chief and aids Leon by firing a shot or two at his assailant. The Chief turns to try to attack her, but she swiftly fires her grappling gun and escapes before he or Leon can find out who the shooter is.
A Reunion of Sorts
Somewhat similar to their first meeting in Raccoon, Ada happens upon Leon again and playfully orders him to put his hands up. Leon quickly turns around and twists the gun out of her hands. It goes flying into the air and Ada tactically flips over and catches it, but shortly after getting right side up again, Leon greets her neck with his knife. Leon comically tells her she should try using a knife next time. The two let go of each other and Ada smoothly remarks that it's been awhile. Leon rather disappointedly realizes that the rumors about her working with Wesker are true, and Ada simply agrees that he's been "doing his homework". She craftily drops her smoke bomb activated sunglasses on the ground while Leon continues to interrogate her. When he asks her why she showed up, she let's out a cool "heh" and makes a break for the balcony as the glasses explode. Before she leaves, she mischievously tells Leon she'll see him around.
Signed With a Kiss
Ada soon after realizes that Leon and Ashley, the president's daughter, are in danger since they've been injected with a Plaga egg. She leaves a note for him that explains the procedure for removal of the egg near one of the merchant's stands, knowing he'll eventually find it.
Need a Ride, Handsome?
Not too long after their last parting, Leon stumbles upon Ada in a motorboat and she offers him a ride to the island where Ashley is being held. Somewhat embarrassed, Leon accepts. During their "cruise", Leon shyly looks at Ada as if he's going to make a move or ask her something sweet. Ada notices this and lets the boat ride out of control slightly, knocking Leon around a bit in the process. She uses her grappling gun on the side of a cliff by the island and seductively gets out of the boat. Before she heads upward, she let's Leon know she has some business to take care of and again says she'll see him later.
Fly By Advice
Knowing that Leon needed to reach the island to free Ashley, Ada follows him to the research facility, where the girl is being held. She watches as Leon finally reaches her cell and takes this chance to shoot a paper airplane with a kiss and a tip to escape through the garbage chute written on it through the prison window.
Teammate Tensions
After helping Leon out, Ada meets up with Krauser to discuss their mission. Krauser asks Ada how Leon is doing and she tells him he isn't making it easy. She queries about the sample and Krauser informs her that Saddler caught on to their plans and recovered the sample from Luis. Ada somewhat sarcastically finds the situation "perfect". Krauser quickly adds that he doesn't trust her and neither does Wesker. He threatens to kill her if she tries anything clever. Ada saucily reminds him that she's known Wesker longer than he has. He retorts that they'll see soon enough and she leaves as she agrees that they will.
Turning Against A Partner To Help A Friend
Ada shows up to rescue Leon just as he's about to be stabbed by Krauser. She shoots the knife out of his hand and both Leon and Krauser look to her. Krauser, obviously annoyed and not surprised to see her, comments that it's "the bitch in the red dress". She calmly informs him that he's outnumbered. He grunts and exits. Leon, now agitated that Ada keeps appearing and disappearing, again asks her what it is she's trying to accomplish. But again, Ada says she'll tell him some other time and coolly jumps off the platform.
Surprise Attacker
Ada continues to follow Leon closely, and makes another appearance when she sees him holding himself in agony in an underground area of the island. She asks if he's okay and, though he assures her he's fine, it's obvious he's not. He starts grunting and suddenly, the Plagas possess him. Out of control and right mind, Leon starts strangling Ada. They struggle for a bit and finally, Ada stabs Leon's leg and kicks him back. This causes Leon to snap out of it and apologizes to Ada between gasps of breath. After the two regain composure, Ada tells Leon that they have to get the parasite out of his body. He agrees, but insists he has to save Ashley first. Ada somewhat abruptly okays this and adds they should split up. Once again, she makes an exit.
A Rescue For A Rescue
After much turmoil, Leon finally finds the room where Ashley is being held captive yet again. Saddler foils his plans to free her though by controlling his body and tossing him at the container Ashley is in. Ada steps in just in time and pumps Saddler full of lead with her machine gun. This stalls the cult leader a bit, and Ada yells at Leon to set Ashley free. The moment he does, Saddler starts acting strange and both he and Ada realize he's about to use his full power. Ada immediately tells Leon to take Ashley and run. He starts to do so and Ada keeps Saddler from chasing after him by shooting explosive canisters to block the path. She succeeds in keeping him away from Leon, but Saddler instead takes her, ties her up, and hangs her from a beam on the roof of the complex. Her captivity doesn't last long, as Leon soon makes his re-entrance. He calls out Ada's name and then throws his knife at the rope binding her, cutting it. Now free, Ada starts to slowly get up. Leon asks if she's alright and she bleakly replies that she's been better. He then tells her to get out of the way as he prepares to fight Saddler for the last time. Leon and the now biologically altered cult leader exchange blows for a while, until Ada tosses a special rocket launcher out onto the battlefield. She yells at Leon to use it and, of course, he does.
Unsettling Farewell
As Saddler's shattered body stills, Leon sights the Plaga sample nearby. He bends down to pick it up and at that same moment, Ada puts a gun to his head. She demands that he hand over the sample and Leon does so. When he asks if she knows what she's taking, she contentedly lets out a "hmm". Before Leon can react, she runs off the platform and flies into the air, landing in a waiting helicopter. She mockingly let's Leon know that she'll take good care of the sample and he scoldingly yells her name in return. Cutely, she informs him that she has to go and that, if she were him, she'd get off the island too. That being said, Ada pushes a button on a device that triggers the time bomb that will destroy the place. She says her goodbyes and throws him a key to her jet ski that's located nearby. As her helicopter flies off, Leon notes the little stuffed bear attached to the key and somewhat bitterly mutters "Very cute."
Rebirth Of Umbrella
In the chopper, Ada places the sample in a protective box. Just as she closes the lid, Wesker appears on a screen in front of her. He compliments her timeliness and asks if Krauser is with her. She informs him that he's dead and Wesker shrugs him off as another expendable grunt. He resumes lauding her by saying that she's just brought them one step closer to the recreation of Umbrella. Hearing this, Ada looks down and makes a pained expression. Wesker adds that Umbrella's reestablishment will cause significant changes in the world. He maniacally laughs as the helicopter flies off into the distance.