John Nichol uses La Dama's underground travel routes to sneak his virus out of Mexico and into the states where his Intergang benefactors wait for the shipments. Fortunately, Peacemaker was helping the Vanguard border patrol in preventing any trigger happy Texans from shooting innocent immigrants when he came across a shipment of Nichol's virus. Esteban, the leader of the illegal caravan, tells his lackies to shoot themselves up with the virus. The only person who didn't do what Esteban asked was Mariposa Nichol, who was placed there by her father to supervise the shipment.
Jaime arrives to help Peacemaker but Esteban's newly enhanced magnetic powers caused a disruption in his scarab's abilities. Esteban and his gang escape while Mariposa stayed behind pretending to be another illegal immigrant trying to get into the country. Mariposa tells her sad story to Jaime and Jaime takes Mariposa to his friend Paco because Paco's mother handles immigration cases.
The next day, Jaime visits La Dama to get answers as to what happened at the border but her answers were very cryptic because if she told Jaime that she was working with Nichol or Intergang then this would put a further strain between her and her niece Brenda. La Dama calls Nichol after Jaime's visit and tells Nichol that after last night's fiasco, she refuses to help him ship anymore of the virus. Nichol threatens La Dama that if she refuses then she had better watch her back the next time she is alone.
Nichol then orders Mariposa to meet with La Dama for an assignment. Mariposa calls out to La Dama at a park bench where La Dama usually goes to getaway from her alternate lifestyle of being a criminal. La Dama is shocked by Mariposa's abrupt entrance but she soon realizes that Mariposa was not sent to kill her. La Dama tells Mariposa that Nichol intended for her to be so startled by Mariposa's greeting that she would have shot Mariposa thinking she was an assassin sent to kill La Dama. Mariposa is shocked by this revelation and decides to hide out at a motel.
Paco receives a call from Mariposa stating that she needs to talk to him. Paco brings Brenda along with him and both of them end up as Mariposa's hostages. Mariposa thinks Paco is Blue Beetle due to his physique and by kidnapping Blue Beetle, this will impress her father. At the motel, Mariposa was followed by an associate of her father's named Bowers. Bowers was instructed by Nichol to eliminate Mariposa but Paco and Brenda overcame Bowers when he busted through Mariposa's motel room door.
Mariposa arrives at the riot scene and tells Jaime that her father's true goal was to siphon the magnetic power from White Sands High Energy Testing Facility. Nichol intended to inject himself with militarized monopoles which are superconductive fluid like magnets with a single pole thereby giving him an invulnerable skin and the ability to catalyze fusion reactions. Nichol defeats Jaime and leaves him for dead then he heads toward San Paterno, Mexico to explore his newly enhanced magnetic powers. Jaime's scarab revives him and Mariposa rallies a couple of magnetically charged Vanguard members into helping Blue Beetle defeat her father because she informs them that the virus will kill them after a prolonged exposure.
Mariposa arrives in San Paterno with the Vanguard members. The Vanguard distracts Nichol and Mariposa literally stabs her father in the back then Blue Beetle's scarab gathers enough energy to blast Nichol which negates his powers. Nichol is then carted of by the Federales for his crimes against Mexico. As for Mariposa, Jaime takes her to Mexico City where a friend of his has a grandmother that can look after her. After dropping off Mariposa, Jaime sets the record straight about his view on illegal immigration and he exposes DA Chacon's connection to Nichol.