https://www.pcgamer.com/call-of-duty-black-ops-4zombies-will-take-you-to-the-titanic-and-ancient-rome/

The Call of Duty: Black Ops 4 event today confirmed that, why yes, the highly-revered co-op zombie mode will make a return to the series. It brings along a story as well, one that sees you and your zombie-battling companions traveling through time, visiting the Titanic in one instance and Ancient Rome in another. You can see one story trailer above, and two more further down this page.

The three campaigns from the trailers will be available the day Black Ops 4 launches, and will feature a number of customization options so players can tweak these campaigns. Called Mutations, these options will let players change elements like zombie speed and health, weapon damage, and more.