In the aftermath of first contact with the alien "Observers" that uplift humanity to the stars before mysteriously vanishing, twin sisters Sarah and Sophie embark on vastly different career paths across the galaxy. Sarah, a xenoarchaeologist, delves into the mysteries of the alien benefactors while Sophie, a military intelligence operative, becomes embroiled in a web of espionage and interstellar intrigue. After a decade of separation, they find themselves holding pieces to a puzzle that could prevent a devastating civil war. Their personal struggles and conflicting loyalties culminate in a tragic climax, shedding light on a looming threat that humanity seems oblivious to. Deicide explores themes of sisterhood, loss, sacrifice, and the price of progress, all set against the backdrop of a futuristic society teetering on the brink of destruction.