Star vs. the Forces of Evil (2015)

S3E4 Battle for Mewni: Marco and the King

King River faces significant challenges in managing the kingdom of Mewni in the absence of Queen Moon's guidance. As he navigates the complexities of leadership, he finds it increasingly difficult to maintain order and harmony among the subjects. The pressure mounts as River strives to uphold the legacy of his wife while seeking support from allies, including Marco, to help stabilize the situation. Together, they confront various obstacles that test their resilience and resourcefulness in this crucial time for Mewni.