When bank robbers and their hostages run into backwoods cannibals, the bank robber is chained to the hostage, and when they escape, must work together whilst being hunted through unknown terrain.
The second bank robber is killed during the Inciting incident. The hostage’s daughter is taken captive. (Though I omitted that from the logline.)
What they have is a kind of 3:10 to Yuma thing.
He’s a wanted man – and desperate to just get out of there and survive. It’s everyman for himself.
Whilst – she’s desperate to go back for her daughter.
They have one gun between them. One bullet.
While I would have gone the other way with this one, (Concentrated on the hostage’s plight to save her daughter) I do think you were correct to stick to one main plot.
(btw, the ‘one bullet’ plot point seems to be a hook, you might want to add that to the logline and try it on for size, you can always take it back out if you don’t like it)