Schoolboy Petya Ivanov receives a letter from a famous scientist and 20 grains of a new high-yield variety of wheat. Petya and his schoolmates decide to create an experimental plot. Fearing that adults will take the seeds away from them, the children do everything in secret.
A young woman welcomes a stranger into her home who pretends to have an accident. After a fleeting romance, the two marry and she immediately inherits a fortune due to the death of her uncle.
Krestan Serbin, a 64-year-old Sorbian farm-worker, considers himself non-political. He owns a few acres, a few pigs and a cow, and intends to pass all this on to his daughter Lena.
Mr Pastry's social climbing daughter, president of a society for the rehabilitation for ex-convicts, hides the fact that her father is himself a prisoner.
Don Juan arrives in a Spanish town and immediately becomes embroiled in amorous adventures. While looking for love affairs, he meets the beautiful Donna Anna, the commander's daughter, who mistakes the masked cavalier for Don Octavio because of his height and clothing.