Lighter than Heir's setting is a fictional Germanic fantasy world. The story begins with a young volant girl named Zeppelin Von Schultheiss. She's the daughter of her country's greatest war hero, Hemmel Von Schultheiss. All of her life, she was surrounded by love from the public and the media due to her father's great accomplishments, but her own efforts always went overlooked.
With resentment for her father and an inflated ego, she signs up for the military on her 19th birthday in hopes to outshine her dad. Little does she know the military is the last place for a self-centered brat.