Ellie's time in the United Beast Kingdom has proven fruitful. She met Egret, a mysterious yet friendly merchant who might just be the person she needs to expand her business into the kingdom's sphere of influence. She also faced her father, Sieg Leiston, and took her next step on the road to revenge. After her return to the imperial capital, her plans to take it easy for a while and enjoy the upcoming festival with her adopted daughter and friends are complicated when her brother, Eiwass, comes to visit her out of the blue. Will Ellie manage to relax with Eiwass, her shrewd sibling, and Roselia, her former rival, in town?