After the massive battle on the 59th floor, Loki Famila makes their return. However, along the way their progress is halted by the appearance of an Irregular and they make camp on the 18th floor. There, Aiz faces an unexpected and sudden reunion with a certain white-haired boy that a certain young elf couldn't be less excited to see. The other adventurers are all curious, hoping to find out more about the fastest growing adventurer in history but Lefiya has other ideas...