Gray Fullbuster-an enigmatic spy and the most formidable member of Team Natsu. Juvia Lockser-a mesmerizing warrior once shunned by Phantom Lord, later recruited as an agent of Lamia Scale after impressing them with her combat skills.
Fate brought them together on a mission, sparking a love neither expected. Yet, unbeknownst to Juvia, they were mere pawns in a grand scheme between their guilds, with her as the ultimate target.
After the war, their paths diverged, leaving only frozen memories of the past thirteen years. Both changed by time, neither knew what the other had endured.
Then, on a supposed vacation to Margaret Town with Team Natsu, Gray unexpectedly encounters Juvia once more-only to discover he unknowingly left behind a precious legacy: their son, Greige.
But their reunion is far from joyous. Juvia and Greige are now hunted by Lyon, Juvia's husband, who once saved her from death but now seeks to silence them after Greige uncovers the dark secrets of Lyon and his guild.
As Team Natsu's getaway turns into a life-threatening mission, Gray must fight for the family he never knew he had. But can he come to terms with the truth-that what he and Juvia shared was always real?