Dan, Yaz, and Jericho travel around the world in 1904 to try to discover the date for world's end, evading countless assassins. A Nepalese hermit suggests they should reunite with Karvanista; although they leave a message for him at the Great Wall of China, he cannot use time travel so cannot respond. The trio search out Joseph Williamson and the mysterious tunnels he dug under Liverpool, realizing he had discovered doorways leading to various time periods and locations.
