Calcutta Alone Timeline
In this timeline, Calcutta will never meet anyone until the time she assaults Inkopolis. At that moment, an unspecified agent will come to strike her down. This timeline resolves through two paths.
If Calcutta dies, her machines will be safely disconstructed and removed, allowing peace to be restored as though nothing had ever happened. Her body will remain, until it is discarded, too. There will be no legacy but a mere memory of a particularly bad storm, back then, in Inkopolis.
If the agent fails to kill Calcutta, she may not necessarily kill them. Regardless of that choice, Total Immersion will begin, harder to stop as it progresses, until nobody can do anything about it. The world will be submerged, despite its struggle to live, into a gentle death.
Nobody is happy with this.