Underfell! Sans(Cherry) and Papyrus(Boss) had gotten in serious trouble for almost shattering a innocent monster's soul. But Undertale! Sans(Sans) has a better idea than just sending Underfell Sans to Error!Sans(Error) in his private jail. Instead, Undertale! Sans decides to send Cherry to live with Underswap! Sans(Blueberry) and Papyrus(Orange) in Underswap. Can Cherry survive Underswap without killing anyone? Or will he fail and be sent to Error's prison in Errortale? And what happens when Cherry starts to grow feelings for the adorable person that is Blueberry?