and Tauriel in The Hobbit film series (2012–14). In the Marvel Cinematic Universe, she stars as the superhero Hope van Dyne/Wasp in the films Ant-Man
Plot
In 1987, Janet van Dyne / Wasp shrinks between the molecules of a Soviet nuclear missile, disabling it but becoming trapped in the
microscopic quantum realm. Hank Pym / Ant-Man raises their daughter Hope assuming that Janet is dead. Years later, former criminal Scott Lang takes up the mantle of Ant-Man and discovers a way to both enter and return from the quantum realm. Pym and Hope begin work on repeating this feat, believing they may find Janet alive. Lang and Hope also start a romantic relationship and begin training to fight together as Ant-Man and the Wasp, until Lang secretly helps Captain America during a skirmish between the Avengers in violation of the Sokovia Accords. Lang is placed under house arrest, while Pym and Hope go into hiding and cut ties with Lang.[N 1]
Two years later, Pym and Hope briefly manage to open a tunnel to the quantum realm. Lang receives an apparent message from Janet, who he is quantumly entangled with. Despite having only days left of house arrest, Lang decides to call Pym. Hope kidnaps Lang, leaving a decoy so as not to arouse suspicion from FBI agent Jimmy Woo. Seeing the message as confirmation that Janet is alive, Pym and Hope work to create a stable tunnel so they can take a vehicle to the quantum realm and retrieve Janet.
Hope arranges to buy a part needed for the tunnel from black market dealer Sonny Burch, but Burch has realized the potential profit that can be earned from Pym and Hope's research and double-crosses them. Hope fights Burch and his men off, until she is attacked by a quantumly unstable masked woman. Lang tries to help fight off this "ghost", but she escapes with Pym's portable lab.
Pym reluctantly visits his estranged former partner Bill Foster who helps them locate the lab. The ghost restrains Lang, Hope, and Pym when they arrive, and reveals herself to be Ava Starr. Her father Elihas, another former partner of Pym's, accidentally killed himself and his wife during a quantum experiment that caused Ava's unstable state. Foster reveals that he has been helping Ava, who they plan to cure using Janet's quantum energy. Believing that this will kill Janet, Pym refuses to help them and the trio manage to escape.
Opening a stable version of the tunnel this time, Pym and Hope are able to contact Janet who gives them a precise location to find her,
but warns that they only have two hours before the unstable nature of the realm separates them for centuries. Burch learns their location from Lang's business partners Luis, Dave, and Kurt, and informs a contact at the FBI. Luis warns Lang, who rushes home before Woo can catch him breaking his house arrest. This leaves Pym and Hope to be arrested, and for their lab to be taken by Ava.Lang is soon able to help Pym and Hope escape custody, and they find the lab. Lang and Hope distract Ava while Pym enters the quantum realm to retrieve Janet, but the pair end up fighting Burch and his men, which allows Ava to break back into the lab and begin taking Janet's energy. Luis, Dave, and Kurt help apprehend Burch, so Lang and Hope can stop Ava. Pym and Janet arrive safely from the quantum realm, and Janet voluntarily gifts some of her energy to Ava to temporarily stabilize her.
Lang returns home once again, in time for a now suspicious Woo to release him at the end of his house arrest. Ava and Foster go into hiding, but Pym, Lang, Hope, and Janet plan to harvest energy from the quantum realm to continue helping Ava. In a mid-credits scene, Lang is doing this in the quantum realm when Pym, Hope, and Janet all disintegrate.