Serena and Carlo are happily married in Italy, but the arrival of his sister Silvia, disrupts the peaceful family balance. In fact the woman, when was a young girl, went in Hungary and married an athlete with whom she had a son. But now the couple, when comes to Hungary for a promise made to dying mother of Carlo, discovers that Silvia's husband had a serious accident and now is paralyzed. So it's up to Carlo and Serena helping the poor Silvia to look after the baby.