BeatRider is a narrative-driven action game set in a coastal metropolis where humans coexist with mysterious, sentient beings called Kururu. These entities resonate with human mental and physiological rhythms and influence cognition and sanity. Only a rare few-known as Tuners-can perceive and interact with Kururu, and this summer a new apprentice Tuner, Mioi, arrives in Baixiang City with her companions Kasula and Syss. As routine patrols continue, the city begins to show disturbing group dysregulation, and two enigmatic Tuners arrive with secret commissions. Each patrol draws you closer to the hidden truth behind the disturbances.