Having fallen out with his girlfriend Dolorès, Juanito leaves for Mexico, where he becomes a famous matador.There he meets a Viennese singer, Fanny Miller, who falls for him so much so that she intercepts the letters Dolorès keeps on sending him. In desperation, Dolorès devotes all her time and efforts to dance and she becomes the celebrated dancer Estrellita. After a series of misunderstandings and ups and downs, the sun of Andalusia will finally reunite the two lovebirds.

Martin and Antoine, two French criminals, team up with Román and El Picas, a friend of the latter, to commit robberies in Barcelona, but things do not turn out as expected.

Enrique kills a man for stealing him a check he has received due to an accident. However, things get complicated because it had not yet been cashed. This will force him to try to forge the signature and eliminate any suspect, including his girlfriend Clara, who works in a law office and who talked him about the check. Police tracks the case, but by chance Pedrito, the police inspector's son, is also investigating on his own.

Duran and his team of the fifth group are secret agents missioned by Inspector Peña to find and capture a gang of dangerous criminals who are planning a major hit.

At eleven, Juan Jose and Morucha are determined to turn his small band into an orchestra and raise funds. The reason is to help a classmate who is seriously ill.

Barcelona, Spain, at the end of the 19th century. Joaquín Rius, a prominent businessman, marries the young Mariona Rebull. Their apparent happiness is overshadowed by the arrival of Ernesto Villar, Joaquín's friend and Mariona's former lover.