Catarina, a young and insatiably curious journalist, becomes involved in a contest to discover the most red thing in the world, which strains her relationship with Gabriel. Her growing obsession with finding the answer brings up deep and conflicting emotions about their unstable relationship.

Julia and Sérgio set out in search of Rebeca, a missing cycling activist, moving through Brasília, a city marked by silence and unresolved histories. Their investigation leads them to forgotten tragedies, where ruins, memories, and unsettling presences begin to intertwine. Blurring the line between the real and the fantastic, Mapas unfolds as a journey through ghosts of the past that continue to echo in the present.