In a realm where individuals' destinies are shaped by mystical crests, Prince Heale is burdened with the seemingly insignificant Cave King crest. Branded a disgrace by his kin, he is banished to a desolate island devoid of life. Determined to persevere, Heale utilizes a pickax to enhance his sheltered cave, unveiling the surprising might of his crest. Contrary to its initial worthlessness, Cave King empowers him in mining and construction within caverns effortlessly. No longer shackled by his perceived uselessness, Heale's solitary existence transforms into a journey of unearthly revelations and transformative encounters on the secluded island.