"To uncover a conspiracy" means to reveal or disclose a secret plan or scheme that involves a group of people secretly working together to do something wrong or illegal. Full definition
To no surprise, they encounter terrifying new breeds of enormous dinosaurs while uncovering a conspiracy that threatens the entire planet. (relevantmagazine.com)
After uncovering a conspiracy from within, you and your party are tasked with saving the day. (cubedgamers.com)
Good thing, too, because the secret agent has uncovered a conspiracy more far - reaching and unpleasant than anything anyone back at the home office could have imagined possible. (moviefreak.com)