A package arrives at your character’s door (one of your favorite original characters or a new one, it’s up to you) that he or she didn’t expect. He or she takes sees it’s addressed to what must have been a previous tenant because while the address is right there’s no one here by that name now. The delivery service is long gone so he or she takes the package inside. The character sets the package on the table and looks at it.
This is where your story begins. If you want to fill in the details for how your character arrived at this moment, do that later. For now, focus on what happens now that the package is in the home, on the table, and being considered by your character.
Please give yourself fifteen minutes for this exercise. Write it up and see what happens.