Alcia is a world governed by "Count": numbers engraved on a person's body, representing any number related to their life. These Counts determine a person's social status and power in Alcia. If a Count reaches zero, the person is sent to the Abyss, a place rumored to be worse than death. Hina, a traveler whose Count is based on the distance she traveled, witnessed her mother get dragged down into the Abyss. Determined to fulfill her mother's last wishes, she sets off on a journey in search of the legendary Aces—heroes of the war that happened three hundred years ago, bearing a white star next to their Count. While wandering around, Hina encounters Licht Bach, a mysterious masked man with negative Count, and Nana, the owner of a tavern. In the midst of having a good time, Hina is tricked into a battle with a military soldier. However, despite his negative count, Licht rescues Hina and reveals that he has another count, one with a white star, one of a legendary Ace. Plunderer follows the journey of Hina and other inhabitants of Alcia as they discover the truth about their world, the Abyss, and the legendary Aces. [Written by MAL Rewrite]

After an eventful winter break, Kyoutarou Ichikawa and Anna Yamada reunite with a stronger bond. They continue to grow in their own ways, with Yamada taking on more challenging photoshoots and Ichikawa maturing both physically and emotionally as he tackles his affections for Yamada. However, spending time together outside of school allows for their relationship to deepen, and it becomes increasingly difficult to deny their budding romantic feelings. Grappling with these unexpected and new emotions, Ichikawa and Yamada realize that, with the passage of time, their relationship is bound to change—and they must ultimately decide whether they wish to remain close friends or finally become a couple.

Due to a tragic accident, Banri Tada is struck with amnesia, dissolving the memories of his hometown and past. However, after befriending Mitsuo Yanagisawa, he decides to move on and begin a new life at law school in Tokyo. But just as he is beginning to adjust to his college life, the beautiful Kouko Kaga dramatically barges into Banri's life, and their chance meeting marks the beginning of an unforgettable year. After having a glimpse of college life, Banri learns that he is in a new place and a new world—a place where he can be reborn, have new friends, fall in love, make mistakes, and grow. And as he begins to discover who he was, the path he has chosen leads him towards a blindingly bright life that he will never want to forget. [Written by MAL Rewrite]

Unlike his friends, Takumi Fujiwara is not particularly interested in cars, with little to no knowledge about the world of car enthusiasts and street racers. The son of a tofu shop owner, he is tasked to deliver tofu every morning without fail, driving along the mountain of Akina. Thus, conversations regarding cars or driving in general would only remind Takumi of the tiring daily routine forced upon him. One night, the Akagi Red Suns, an infamous team of street racers, visit the town of Akina to challenge the local mountain pass. Led by their two aces, Ryousuke and Keisuke Takahashi, the Red Suns plan to conquer every racing course in Kanto, establishing themselves as the fastest crew in the region. However, much to their disbelief, one of their aces is overtaken by an old Toyota AE86 during a drive back home from Akina. After the incident, the Takahashi brothers are cautious of a mysterious driver geared with remarkable technique and experience in the local roads—the AE86 of Mount Akina. [Written by MAL Rewrite]