In the wake of a cosmic upheaval, the entirety of Earth's population finds themselves transported to a mysterious and untamed realm—a brand new plane ripe for exploration and conquest. Among them is Liam, an ordinary individual thrust into an extraordinary situation. In this new world, every inhabitant has been granted the opportunity to rise as a lord, commanding their own unique armies and territories.

However, fate is not kind to Liam. While others receive powerful troops and resources, he is bestowed only the lowest tier of soldiers, a blue slime, seemingly chosen randomly. Despite this disadvantage, Liam discovers a hidden advantage—a mysterious ability to access a "cheat" once a week, which allows him to purchase one item for free in the mall once a week.

With this newfound advantage, Liam sets out to defy the odds and carve out his own path to dominance in this cutthroat landscape. But as he rises through the ranks, he attracts the attention of powerful rivals and dark forces lurking in the shadows. Alongside his ragtag army, Liam must navigate treacherous landscapes, confront mythical beasts, and outmaneuver cunning adversaries in order to survive.