Against her will, Twilight finds herself randomly transported across two worlds. One is the Equestria she knows and loves. Another is an Equestria devoid of life that exists in only ruins and shadow. Determined to prevent her Equestria from meeting the same fate, she searches for the cause of the calamity that devastated the other side. Disturbingly lucid dreams haunt her nights, and events around her cause to question that if her quest for the truth will save her world, or in turn create the disaster she seeks to avoid ...