"Misuke in the Land of Ice" centers on Misuke, a young girl from a small coastal village, who discovers a mysterious pendant that transports her to a frozen, otherworldly realm known as the Land of Ice. This realm is governed by an ancient prophecy foretelling the arrival of an outsider who will either save or doom the land. Misuke is quickly identified as the prophesied "Child of Frost," a figure destined to restore balance to the land by awakening the dormant Ice Guardian, a colossal entity that protects the realm from an encroaching darkness.

The Land of Ice is inhabited by various tribes and creatures, each with their own customs and conflicts. Misuke forms alliances with key figures, including Kael, a stoic warrior from the Frostfang Tribe, and Lumi, a mischievous yet loyal ice spirit. Together, they embark on a journey to locate the scattered fragments of the Ice Guardian's heart, which were shattered centuries ago during a catastrophic war. The fragments are guarded by powerful entities and hidden in treacherous locations, requiring Misuke and her companions to overcome both physical and emotional challenges.

As the group progresses, they encounter the antagonist, Lord Veyron, a fallen noble who seeks to harness the Ice Guardian's power for his own ambitions. Veyron's forces, including corrupted ice beasts and rogue tribes, relentlessly pursue Misuke, creating tension and escalating stakes throughout the narrative. The series explores themes of resilience, trust, and the weight of destiny, as Misuke grapples with her role in the prophecy and the sacrifices required to fulfill it.

The story is structured around episodic quests, each focusing on retrieving a fragment of the Ice Guardian's heart, while gradually revealing the history of the Land of Ice and its inhabitants. Flashbacks and lore are woven into the narrative, providing context for the ongoing conflict and deepening the emotional connections between characters. The final arc culminates in a climactic battle where Misuke must confront Veyron and make a pivotal choice that will determine the fate of the Land of Ice. The series concludes with a resolution that ties together the central themes and character arcs, leaving room for interpretation regarding the future of the realm and its inhabitants.