I will do script coverage or logline for your screenplay

If you've got a great story that you want to sell to Hollywood, TV studios, or financiers, they'll want to read or hear the logline first. Before your story even gets looked at, this is the first time that script readers and executives might reject all of your work.

A great example for Die Hard:

"A foul-mouthed, wisecracking NY cop comes to L.A. and must rescue his estranged wife and her coworkers when their office building is taken over by terrorists."

Problems in the development of a 25 word logline can often expose other problems in the story, itself. A logline should convey what the film is going to open with when the story really gets moving.