Just when their unconcealed hatreds (looking at you, Black Alice and Gossamer) and repressed attractions (don't get us started) are set aside long enough for their first mission, the Secret Six separate, and an unlikely few of their members get snatched off the chessboard. Hopefully, the fraction of the Six still standing find and rescue them, instead of just sending a thank you card to their captors. Meanwhile, someone's digging ever closer to the deadly trove of secrets walled off in Waller's brain, and the Squabbling Six are the only people on Earth with a chance to stop them!