In the Sierra of Santa Catarina, east of the Valley of Mexico, a volcano erupts. The crack of the earth is heard in the middle of the night. All things reverberate and the sky becomes red. Two teenagers emerge from within the volcano. Centuries later they wake up. It is the last day of time, when all the fire dies, the day of the offering when it all begins as a spiral for yet another century. Irene tries to go back to the place where she comes from, wandering the city and the volcanos. She crosses the Xaltepec volcano until she arrives at La Caldera. Gamma wanders the jungle, exploring the landscape until he is lost. Memories of the volcano’s explosion cross his mind.