Marked by the reputation of “son of the devil”, Zeca sees his life change when he falls in love with Maria Rita, Santinha. But the young woman's devotion and expectations about her destiny put the romance to the test.
Eugênio Fontes is a medical student striving for upward social mobility. His impoverished childhood left him with an inferiority complex that hinders him in both his career and his romantic life; consequently, his struggles and dreams are entirely focused on achieving financial security. Deeply conflicted, he feels unable to love his parents, Alzira and Ângelo, to whom he owes his education. While in medical school, Eugênio meets Olívia Miranda, and the two fall in love. However, he ultimately marries Eunice—a beautiful, wealthy young woman and the daughter of the industrialist Cintra. Through his marriage to Eunice, Eugênio secures a good job and gains influential connections, such as a friendship with Felipe Lobo, a respected architect and associate of his father-in-law. Yet, as time goes by, the young doctor begins to question his marriage.
'Cuca Legal' tells the story of Mário Barroso, a single aviator involved with three women at the same time: Virgínia, Irene, and Fátima. Virgínia is a wealthy businesswoman obsessed with the direction of her late father's business; Irene is a middle-class young woman who gives private piano lessons; and Fátima is a poor widow. Mário can't decide which of them is the ideal woman to give him a child with a "cool head" (cuca legal). Things get even more complicated when Maria Joaquina, nicknamed Kinu, Virgínia's mother, also catches the aviator's attention. To escape the troubles he constantly gets into, Mário relies on the help of his mother, Dalva, and Jacaré, his great friend.
To save her sister, Xu Qinghuan becomes He Xiao’s lover. When his first love, Zhao Xiwan, and rival Qin Hao plot against her, leading to her sister’s death, Xu Qinghuan ends the relationship. Realizing his true feelings, He Xiao exposes the culprits and relentlessly pursues Xu Qinghuan, seeking love and justice.