Cymbeline Igloo must uncover who is targeting his favorite teacher while also helping his friend Veronique unravel a family secret tied to a traumatic past. Cymbeline, a young protagonist, faces the dual challenge of identifying a wrongdoer in his school and assisting Veronique with her grandmother's illness. The grandmother, Nanai, carries a hidden history from her escape from Vietnam as a Boat Person, a journey that involved the loss of her twin sister. Cymbeline's quest to solve these mysteries is framed by the understanding that unexpected connections can profoundly impact lives.

The premise sets up a narrative that balances a school-based mystery with a more profound exploration of a refugee's past. The focus on friendship and family secrets suggests a character-driven story with emotional depth. The themes of immigration and resilience indicate a thoughtful approach to complex social issues, likely aimed at a young adult audience. The author's previous success with 'Boy Underwater' implies a continued exploration of moving and humorous storytelling.