Twilight must definitely recover a document threatening the fragile balance of forces between East and West. For this mission, he teamed up with Nocturna, a collaborator secretly taken of him. Everything will be played during a clandestine tennis tournament, the outcome of which might well call into question Yor's position within the Forger family. Indeed, Noctuna swore to take the place of Twilight's false wife in the framework of Operation "Strix". Aware of the danger she is facing, Yor nevertheless has doubts about her ability to play the role of Mrs. Forger. At the same time, Twilight despairs of getting closer to his target, the dangerous and more unreachable Donovan Desmond...