Set not long after the events of TV: Sleeper, Ianto notices an attractive coffee saleswoman who introduces herself as Mairwyn, a time-traveller who has come to manipulate Ianto into travelling back in time and acquiring some vital technology from Torchwood One with which she can enslave the world. She has chosen Ianto because of his access to Torchwood One security and because, with the knowledge of Torchwood Three's destruction (TV: Children of Earth: Day One), Tosh and Owen's deaths (TV: Exit Wounds), Ianto's own demise (TV: Children of Earth: Day Four), and Jack's abandonment of Earth (TV: Children of Earth: Day Five), he is exploitable. He is visited later by Rhys Williams and John Hart, who have travelled from the future to stop Mairwyn, who had previously introduced herself to John H