Sequence of events (8)
(Other definitions for scenario that I've seen before include "Suggested plan of action" , "Envisaged situation" , "plotting for a film" , "Imagined sequence" , "Imagined situation" .)
(Other definitions for timeline that I've seen before include "Events laid out linearly" , "Chronology" , "Representation of events in order" .)
(Other definitions for plot that I've seen before include "Ground - plan" , "See 12 Across" , "... of story, family ..." , "Patch of ground" , "Small area of ground" .)