E.M. Forster famously said about plot: "'The king died, then the queen died' is not a plot, but 'The king died, then the queen died of grief' is." This is because plot requires causality. It's not just one damn thing after another, it's one damn thing causing another.
Real life isn't always like that, but sometimes it does conform to the conventions of narrative. Yesterday I burned my finger on the stove, bad enough to cause severe blistering. Because of that, I immersed my finger in ice water for two hours. Because of that, I was bored not touching anything, so I attempted to play on-line chess with my chess partner, Marty. This caused water to drip from my finger, which I took out of the ice water to make each move, onto my computer mouse, which caused the mouse to short out. Before the mouse died completely, it was difficult to control, which caused me to inadvertently send the wrong version of my Mars story to Jonathan Strahan in Australia -- a version that lacked not only a title but an ending. Then the queen died of grief.
All this has been straightened out this morning (except my finger). That, too, is a plot requirement. Or, as my grandmother used to say: Finish what you started.
The two guidelines for plot: causality and resolution. Why does it sound so much simpler than actually doing it?