Marie Vlaanderen, a transfer student from Amsterdam, enters the robot training facility in Hokkaido with a lifetime of rigorous piloting discipline, marking her as the prime candidate to awaken an enigmatic entity known only as "it." Instructors underscore her methodical preparation, starkly contrasting her regimented history against the informal training of her peers.

Her enrollment triggers an assault by a towering mechanized foe, forcing the emergency deployment of Dinagiga—a sealed mecha tied to Hokkaido’s unresolved past catastrophe. While central to repelling the threat, her personal stakes and ties to the facility’s covert objectives remain obscured.

Visually, her design echoes composite archetypes from classic mecha lore, merging traits into a distinct silhouette. Interactions with classmates like Hikari Touno stay sparse, and her Amsterdam origins surface only as fleeting mentions. The compressed narrative halts deeper exploration of her latent capabilities, heritage, or the implications of her "x-gene," leaving these threads suspended.

No supplementary media expands her story beyond the two-episode OVA. Without sequels or extended lore, her journey remains anchored to this cryptic introduction, its mysteries preserved.