Hina's mother vanishes into the Abyss with a Count of zero, and those final words become the entire plot. What makes Plunderer work is that it keeps recontextualizing what the Count actually means, what you're being measured for shifts every arc, and the show knows the difference between a number going up and a life getting better. By the time you meet Ace, you've stopped asking what he did in the Waste War and started asking what measuring human worth with a number does to people who believe in it.
In the world of Alcia, every human carries a visible Count: a number that marks their worth. This magical tally rises and falls based on your choices, your actions, your very existence. When Hina's mother's Count plummets to zero, she vanishes into the Abyss, leaving behind only a cryptic final message. That message becomes Hina's lifeline, a desperate search for the legendary warrior known as Ace, a hero whispered about from a forgotten war. What Hina finds instead is Licht, a mysterious swordsman with no memory of his past but an overwhelming desire to protect her. Together they venture across a harsh landscape filled with danger, treasure, and secrets. Along the way, Hina uncovers the truth about her mother's disappearance while Licht grapples with fragments of his own shattered identity. This is a story about redemption measured in numbers but defined by human connection. It balances intense action sequences with genuine character moments, mixing humor and heartbreak as these two outsiders search for answers in a world that judges everyone by a single metric.