Luccas Neto, his sister Gi and their friends Vitória, Pedro and Jéssi had no idea what was to come on the school trip. When Luccas decides to invade the laboratory of the recently disappeared scientist Honório Flacksman, the group is sucked into a portal that takes them to another dimension – the City of Joy.

Salvador, Bahia, January 1835. After more than a decade of hard work, Guilhermina, 27, a slave of Muslim origin, finally gets the resources to buy her manumission, as well as that of Teresa, 11, her teenage daughter. But, contrary to an old promise, his “lord”, farmer Souza Velho, refuses to sell the girl's letter. When Pacific Licutan, Salvador's most esteemed Islamic leadership, is arrested by the Bahian authorities, the Muslim community goes into a boiling state and begins to articulate a jihad. In desperation, Guilhermina sees in the uprising the only way to win her daughter's freedom.