The story of the planet Athena, located in the Cassiopeia constellation, which one day is attacked by space invaders who begin to suck its vital energy. A distress signal is sent into outer space by local astronomer Liza and picked up by four heroes who travel across the galaxy to save the planet.

Ângelo arrives at his grandmother's house in Minas Gerais. There, a small chest full of coins and an enigma were discovered, supposedly left by a priest who, 200 years earlier, would have hidden a handful of diamonds.

In São Paulo, in the late 1960s, the convent of the Dominican friars became a trench of resistance to the military dictatorship that governs Brazil. Moved by Christian ideals, frets Betto, Oswaldo, Fernando, Ivo and Tito came to support the guerrilla group Ação Libertadora Nacional, commanded by Carlos Marighella.