Sansxserena cerita

After having a nightmare of Frisk crying and begging to help them and their friends. Serena goes on the search with the missing small child. With Mina and Luna at her side. Will she and the Sailor scouts be able to save Frisk and the others before another round of cold blooded murders and resets happen once again? And what does this Skeleton name Sans have to do with her Destiny?