A man is attacked inside his house, during a stormy night. A power outage occurs and the man murders the intruder. She tells her daughter what happened, while she waits for the police. His daughter makes a tragic decision.

The discovery of a mysterious letter turns the archaeological remains of Santa Fe La Vieja into a playground for adventure. The mission Mina's grandfather entrusts his granddaughter with will unravel a web of intrigue that will reveal stories of a city from bygone times. A city built on the shores of a freshwater sea that still has secrets to tell.