A working group of geologists is deciding whether humanity has pushed Earth out of the Holocene and into a new epoch, one they call the Anthropocene, marked in rock strata that will outlast every city and species alive today. Key members of that group appear on camera, several for the first time, tracing the story from what the film calls the Time of Fire, when humans first began reshaping landscapes with controlled burning, through to the Great Acceleration of the past sixty years, the sudden spike in population, carbon emissions, plastic, and concrete that shows up in sediment like a geological signature. The film treats this as an open scientific argument rather than a settled verdict, following the evidence scientists point to when they argue humans now rival volcanoes and glaciers as a force reshaping the planet. It closes on the question the working group itself has not resolved: what layer future geologists will eventually read in the rock, and whether that record should register as tragedy or as something closer to dark comedy.