Two years after Scott Lang
was placed under house arrest due to his involvement with the Avengers, in
violation of the Sokovia Accords, Hank Pym and his daughter Hope van Dyne
briefly manage to open a tunnel to the Quantum Realm. They believe Pym's
wife Janet van Dyne might be trapped there after shrinking to sub-atomic
levels in 1987. When he had previously visited the Quantum Realm, Lang had
unknowingly become quantumly entangled with Janet, and now he receives an
apparent message from her.
With only days left of house arrest, Lang contacts Pym about Janet,
despite the strained relationship they have because of Lang's actions with
the Avengers. Hope and Pym kidnap Lang, leaving a large ant with Lang's
ankle-monitor on as a decoy so as not to arouse the suspicions of FBI
agent Jimmy Woo. Believing the message from Janet is confirmation that she
is alive, the trio work to build a stable quantum tunnel so they can take
a vehicle to the Quantum Realm and retrieve her. They arrange to buy a
part needed for the tunnel from black-market dealer Sonny Burch, but Burch
realizes the potential profit to be made from Pym's research and
double-crosses them. Donning the Wasp outfit, Hope fights off Burch and
his men until she is attacked by a quantumly unstable masked woman. Lang
tries to help fight off this "ghost", but the woman escapes with Pym's
lab, which has been shrunk down to the size of a suitcase.
Pym reluctantly takes Hope and Lang to visit his estranged former partner
Bill Foster, who gives them a way to locate the lab. After they find it,
the ghost captures the trio and reveals herself to be Ava Starr. Her
father, Elihas, was another of Pym's former partners who died along with
his wife during an experiment that caused her unstable state. Foster
enters and reveals that Ava is dying and in constant pain as a result of
her condition. They plan to cure her using Janet's quantum energy.
Believing that this will kill Janet, Pym refuses to help them and escapes
with Hope, Lang, and the lab.
Opening a stable version of the tunnel, Pym, Hope, and Lang 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 Quantum
Realm separates them for a century. Using a truth serum, Burch learns the
trio's 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 see that he is violating his house arrest. Pym and Hope are arrested
by the FBI, allowing Ava to take the lab.
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, whom he finds alive. Meanwhile, Lang and Hope are
confronted by Burch and his men, and following a lengthy chase across San
Francisco, Ava regains control of the lab, allowing her to begin taking
Janet's energy by force. Luis, Dave, and Kurt incapacitate Burch and his
men so that Lang and Hope can stop Ava. Pym and Janet return safely from
the Quantum Realm, and Janet voluntarily gives 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 while Burch and his men are arrested and confess
thanks to being injected with Burch's truth serum.
In a mid-credits scene, Pym, Hope, and Janet send Lang into the Quantum
Realm to harvest quantum energy in a plan to help Ava remain stable.
Before they can retrieve Lang, the other three turn to dust. |