This is the Book of Gates episodes (175 & 176) compiled into one big story. See episodes 175 and 176 for further details. Date: c.1305 BCE (first recorded appearance).  Source: KV57, the tomb of Horemheb, and others.  Music intro, interludes, and outro: Luke Chaos. Original compositions by Gorillaz, from the album "Demon Days."  The Book of Gates Translations: J. C. Darnell and C. Manassa Darnell, The Ancient Egyptian Netherworld Books (2018). E. Hornung, Das Buch von den Pforten des Jenseits, I (1979). E. Hornung, Das Buch von den Pforten des Jenseits, II (1984). E. Hornung, The Egyptian Book of Gates, trans. T. Abt (2014). J. Zandee, ‘The Book of Gates’, in Liber Amicorum: Studies in Honor of Professor Dr. C.J. Bleeker (1969), 282--324.