Final answer:
Casiopea releases Hun-Kame by opening a forbidden chest in her grandfather's bedroom in 'Gods of Jade and Shadow' by Moreno-Garcia.
Step-by-step explanation:
In the beginning of Moreno-Garcia's Gods of Jade and Shadow, Casiopea releases Hun-Kame from his prison by opening a forbidden chest in her grandfather's bedroom. By doing this, she inadvertently brings the Mayan god of death into the world and sets off a chain of events that leads her on a journey through 1920s Mexico, full of magic, gods, and family conflicts.
Casiopea's life is forever changed from the moment she discovers the mysterious chest and unlocks it, leading to an entwining of her destiny with that of Hun-Kame.