Dewi said that the Lepharist spies were operating everywhere in Atreia and the Lepharists were hiding order scrolls in a mine cart in Alquimia Stronghold. Dewi has a plan to ruin the Lepharists' intelligence network, but in order to carry out the plan, you needed to push the mine cart to the corner where nobody could see. When you returned after pushing the mine cart, he told you that he switched the scrolls successfully.