Sin the last of the Forthbringer leaves on a mission to find the Hidden Paradise, the key to unlocking his supressed divine abilities to defeat Seikatsu. After an unexpected transformation during his first battle, Sin is left confused, not knowing how or why it happened. Guided by a vision from his late father, Sin must navigate a dangerous world filled with enemies trying to stop him, all while grappling with his powers and searching for answers about who he truly is.