Tracer's time as an Overwatch agent is up. Five years after the ratification of the Petras Act, she now tends to small–scale crimes as a part–time hero. But when a punk-rock omnic named Iggy shows Tracer the dire living conditions that have been forced upon London's omnics, Tracer becomes determined to help in any way possible—even if it puts her back in the crosshairs. Acclaimed Eisner and Harvey award–winning writer Mariko Tamaki (This One Summer, X-23) and kinetic artist Babs Tarr (Batgirl, Motor Crush) are joined by exquisite colorist Rachel Cohen (Snotgirl) and letterer extraordinaire Deron Bennett (Tale of Sand) for a bi-monthly, five-part digital series that will be available online for free, starting this December. Working in close collaboration, Blizzard Entertainment and Dark Horse Comics present Overwatch fans with an exciting new addition to Overwatch's expanding story in the limited series Tracer—London Calling. Set several years after Overwatch and its agents are declared "illegal" this essential tie-in comic series will forever alter Overwatch history!

As Tracer searches for parts to repair the omnics' grid, she attracts the attention of two very different omnic Kace, who distrusts humans, and Mondatta, who dreams of human-omnic equality. But at his London rally, Tracer discovers just how fragile Mondatta's dream is. Acclaimed Eisner and Harvey award-winning writer Mariko Tamaki (This One Summer, X-23) and kinetic artist Babs Tarr (Batgirl, Motor Crush) are joined by exquisite colorist Rachel Cohen (Snotgirl) and letterer extraordinaire Deron Bennett (Tale of Sand). Working in close collaboration, Blizzard Entertainment and Dark Horse Comics present fans and players with an exciting new addition to Overwatch's expanding story!

Tracer struggles with guilt after the assassination of Mondatta. Meanwhile, Kace—the major omnic advocate for anti-human-omnic cohabitation—provokes a rebellion against humans in response to the death of their omnic leader. Acclaimed Eisner and Harvey award-winning writer Mariko Tamaki (This One Summer, X-23) and kinetic artist Babs Tarr (Batgirl, Motor Crush) are joined by exquisite colorist Rachel Cohen (Snotgirl) and letterer extraordinaire Deron Bennett (Tale of Sand). Working in close collaboration, Blizzard Entertainment and Dark Horse Comics present fans and players with an exciting new addition to Overwatch's expanding story!

Tracer struggles to plan her next move after a friend patches up her chronal accelerator. In the Underworld, an assassination attempt is made on Kace, further fueling the omnic rebellion. Acclaimed Eisner and Harvey award-winning writer Mariko Tamaki (This One Summer, X-23) and kinetic artist Babs Tarr (Batgirl, Motor Crush) tell a Tracer tale in collaboration with Blizzard Entertainment.

The climactic conclusion of Tracer—London Calling! Tracer must stop Kace from enacting a destructive plan that will harm humans and omnics alike, all while helping Iggy escape from his clutches. Luckily Tracer won't be alone—heroes come in all shapes and sizes. Some are metallic...and others are old friends!