Eighteen-year-old Margot is treated as a useless outcast by her family, but she hides an explosive double identity.
She is secretly a top elite from the most prestigious military academy — a legendary cybersecurity genius, a combat master, and the reclusive, award-winning jewelry designer known only by the mysterious alias **M・Legend**.
To protect her young sister Zoe and reclaim her stolen family inheritance, Margot plays the weak underdog to outsmart everyone. She single-handedly fixes the critical security failure at St. George Military Academy, crushes the elite Falcon Class with a perfect score in tactical combat, and publicly exposes her cousin Kay for plagiarizing her iconic masterpiece at a prestigious jewelry competition.
Cornered and humiliated, Kay and her ruthless uncle Raymond collude with underground crime leader Hawk to set a deadly ambush. To save her beloved Caesar, Margot charges alone into the fatal harbor trap.
As her countless hidden identities are uncovered one after another, an even greater storm is quietly approaching.
