The PCs are sent to a location by their corporation on the pretext of a mission when they intercept an SOS message from an unknown source. Locating the source of the SOS the PCs discover that it has been sent by a group of ex-corporate troubleshooters who famously bought out their respective corporations contracts. These NPCs are the rolemodels the PCs look up to in their respective fields. The NPCs tell them that their former corporations want them dead... or worse.
The quandry for the PC's is do they join forces with these dissidents and face the wrath of the corporation or do they turn them in?
The scenario is in fact a corporate purity test and the PC's will be "retrained" if they support the refugees rather than alerting the corporation to their whereabouts.
Suitable Game Systems
Anything with a heavy corporate setting: CYBERPUNK / JUSTIFIERS RPG / PARANOIA