A adolescent in 2024 by chance time-travels to 2003, years before a cloaked slayer murder her sis. Now tear between solve the enigma that has undone her parent and her hometown, salvage the sis that she ne'er know, and irreparably change the hereafter — and her own being — she must make up one's mind how to halt the slasher, salvage her household, and intermix into 2003.