Luke is a human known for his explosive temper. Say the wrong thing around him and he'll explode. Though Luke is seen as a heartless brute, he holds a kindness to him. He doesn't want to be scary anymore. Heidi is a borrower longing to learn about human culture. She is passionate about knowing every single detail. Unfortunately, she has an intense fear of them. Most likely a result of what happened to her mother and father. Will an unlikely friendship blossom between the two? Or are they too different to be civil?