Moff Lasre Dardano established Whisper Base on the planet Onderon in order to spy on his political rival Admiral Corlen. The Rebel Alliance wanted to capture the base to use as a forward operating site. Four operatives were sent there, and after trekking through the jungle, they reached the base.
They cut the comm lines in the garage ambushed a team of Imperial Army troopers to take their code cylinders. They then encountered the BX-series droid commando Toor refitted as a maintenance droid in the base. They then disabled the to prevent the base commander Lieutenant Sarev from escaping. With that done, they proceeded to the command center and made their way past stormtroopers. Once inside, they discover that Sarev had gotten into the escape tunnel and was heading to the comm station to warn Moff Dardano.
They then chased after Sarev and defeated his AT-ST, securing the base.
The operatives then secure their position in the base and were soon forced to defend against Moff Dardano's counterattack.
The Takeover forms the campaign in Fantasy Flight Games' 2014 adventure Takeover at Whisper Base. The characters face seven key encounters in the game.