Keke has the opportunity to move to Mars and this implies moving away from the communal life she leads with other trans and queer people on Earth. It is an opportunity to invent an ancestry versed in the inauguration of a new future, as well as to compose the outlines of a dream: a black, fluid and inhabited utopia in which bodies can transit between genders as easily as they do between planets.

On a family trip, Germán, a modest middle-aged father, begins to hear a whistling sound that no one else can hear. The sound heralds the arrival of a creature, El Silbón, and awakens in him a wild impulse and a new desire: to be penetrated.