Often, the next story beat is triggered by checking the terminal in your home base to receive messages from other survivors.
Many story triggers in v0.77 are time-sensitive or require you to visit specific locations (like the Warehouse or the Outskirts) at certain times of the day. Download World After War [v0.77] Walkthrough
Since you are looking for a walkthrough to help with the story flow, keep these tips in mind: Often, the next story beat is triggered by