Tom Clancy's Rainbow Six Siege is a first-person tactical shooter video game developed by Ubisoft Montreal and published by Ubisoft. Three years after the Rainbow Program's deactivation, there is a resurgence of terrorist activities, with the White Mask being the most prominent. The terrorists' goals are unknown, yet they are causing chaos across the world. To counter this rising threat, the program is reactivated by a new leader who is simply known as Six.

Six assembles a group of special forces operatives from different countries to face and combat the White Masks. Recruits go through multiple exercises to prepare them for future encounters with the White Masks, training to perform hostage rescue and bomb disposal. Eventually, the White Masks launch a chemical attack on a university, and the recruits are sent to disarm the bombs and eliminate the enemy presence. The operation is a massive success, though there are casualties.

Six affirms that the reactivation of Team Rainbow is the best and only choice in a time filled with risks and uncertainties. Team Rainbow is ready for their next mission to hunt down the leader of their enemy. and they stand prepared to protect and defend their nation from terrorists.

• Tom Clancy's Rainbow Six Siege