When an impoverished detective named Kaburaya Sosuke encounters Sarah, a princess with magical abilities from another realm, his world takes a fantastical turn. Sarah seamlessly integrates into modern Japanese life under Sosuke's roof. Meanwhile, Livia, a female knight displaced in this new world, unexpectedly finds joy in her newfound homelessness. As these resilient individuals navigate their circumstances, they influence not only Sosuke but also a colorful cast of characters in the neighborhood, including a cunning lawyer, a divorce agent, and a charismatic cult leader.