Mulan meets Iron Widow in this thrilling silkpunk fantasy about a girl who must disguise herself as a boy and enter the famed and dangerous Engineer’s Guild trials to unravel the mystery of her father’s murder. Eighteen-year-old Aihui Ying dreams of becoming a world-class engineer like her father, but after his sudden murder, her life falls apart. Left with only a journal of her father’s engineering secrets and a jade pendant snatched from the assassin, a heartbroken Ying follows the trail to the capital and the prestigious Engineers Guild—a place that harbors her father’s hidden past—determined to discover why anyone would threaten a man who ultimately chose a quiet life over fame and fortune.