The City We Became takes place in
New York City, in a world in which major cities become sentient, through human avatars. After the avatar of New York falls into a supernatural coma and vanishes, five new avatars, representing
the city's five boroughs, come together to fight their common enemy. A homeless black graffiti artist who inhabits rooftops is told he is the avatar of the city by
São Paulo, the avatar of that Brazilian city, warning that avatars face a great enemy. The avatar is chased through the streets by shape-shifting creatures attempting to take over the city; he defeats them but is wounded and destroys the
Williamsburg Bridge, in the process. A black gay graduate student new to the city gets off a train and is struck with amnesia; realizing that he is the avatar of
Manhattan, he takes the name Manny. He encounters white tendrils on
FDR Drive and destroys them by channeling the city's power. He encounters the Woman in White, in a park, and defeats her, with the help of Brooklyn Thomason, a black woman who is the avatar of
Brooklyn. They sense the manifestation of another borough's avatar and head to Queens to find it. On
Staten Island, the borough's avatar Aislyn, a white librarian in her thirties, is approached by the Woman in White, who offers to protect Aislyn from the avatar of New York City; they bond over racist humor. Bronca Siwanoy, a
Lenape woman who is the avatar of the
Bronx, is threatened by the Woman in White, who vanishes, during the confrontation; Bronca, as the oldest borough, receives the historical knowledge of living cities and their enemy. Manny and Brooklyn search the Internet and sense the avatars of the Bronx and Queens, an Indian PhD student named Padmini. At the Center, Bronca reviews a painting titled "dangerous mental machines" (a term for Asian New Yorkers coined by
H. P. Lovecraft in a racist letter) by the "Alt Artistes,” an
alt-right group controlled by the Woman in White. The painting turns out to be an interdimensional portal, and the Center's staff kick out the Artistes. Manny and Brooklyn arrive in Padmini's magically protected apartment and stay the night. Bronca is offered 23 million dollars to exhibit the Alt Artistes' work by the Woman in White, disguised as Dr. White of the "Better New York Foundation.” Bronca turns her down, and the Alt Artistes doxx her and her friend from
Jersey City, Veneza. In Staten Island, Aislyn's father invites a
neo-Nazi to stay with them; he sexually harasses Aislyn. She uses her powers to stop him, and leaves the house. São Paulo meets her and tries to get her to join the other avatars, only for her to hurt him with an energy wave when the Woman in White tells her that the cities are assaulting her home. At the center, Manny, Brooklyn, Padmini, and Bronca enter "cityspace" to find the city's avatar. Bronca explains that
parallel dimensions are real and that cities puncture the walls between them at their birth, destroying nearby dimensions. As they exit cityspace, Hong Kong enters carrying the injured São Paulo. The group discovers that the Woman in White is using non-profits like the Foundation to weaken cities before their birth. Manny and São Paulo find the city's avatar in the old
City Hall Station but cannot awaken him. Bronca, Brooklyn, Padmini, and Hong travel to Staten Island and discover the Woman in White is
R'lyeh, a city from another dimension. Aislyn sides with the Woman in White, who is holding Veneza hostage, and blasts them away with an energy wave that deposits the avatars of the boroughs and Veneza in Wall Street. Veneza transforms into the avatar of Jersey City, and together with the borough avatars, awakens New York City's avatar. The avatars burn away the Woman in White, restricting her to Staten Island. Weeks later, the avatars celebrate on the
Coney Island boardwalk. Hong Kong summons the living cities to a summit in Paris to discuss the Woman in White's hold over Staten Island, and the avatar of the New York City joins the celebrating avatars of the boroughs. == Characters ==