The worlds two worst explorers accidentally find the lost city of El Dorado, only to find that it is in fact hidden deep within North Yorkshire.

Hi Sam. Love the irony of the incompetent ones finding El Dorado. However, I don't understand where the main conflict is going to come from, which is probably because I can't see a specific goal in this logline. This read more like an interesting inciting situation, but it's unclear what the heroes want, what is standing in their way, and why defeat would be devastating for them.

The logline only describes a set up and an inciting incident. More information is need to flesh out a plot and a proper logline.

What's his objective goal?
Who opposes the protagonist?
What's at stake?