A mole within the intelligence agency threatens Operation Strix and Loid's carefully constructed cover. As Anya's attempts to foster friendships take an unexpected turn following a failed hijacking, Loid and his allies race against time to unmask a double agent who has gone deep underground, jeopardizing not only Loid's true identity but the entire mission.

The Spy x Family series is celebrated for its unique blend of espionage thrills and heartwarming family comedy. Readers consistently praise the inventive premise of a spy, assassin, and telepath forming a fake family, finding the dynamic between the characters to be both humorous and endearing. The ongoing narrative, which often involves high-stakes missions for Loid and the Forger family's attempts at normalcy, keeps readers engaged. Volume 12, with its focus on internal threats and the potential exposure of Loid's identity, promises to escalate the series' signature blend of action and comedic tension.