The Countess Clara Serra is in love with Andrea Valverde, but, when she learns from the housekeeper Lisa and her father, that Andrea is actually her brother, she marries Count Guido Rambaldi of Lampedusa. Little Livia is born from their marriage and, even if she does not love her husband, she remains faithful to her, while Guido lets herself be ensnared by the mysterious Yvonne Rigaud. Meanwhile, Andrea, desperate, enlisted and followed the Italian army in the Libyan colonial adventures. The French adventurer aims to seize Clara's assets and she is poisoned by Manuel Barrero. Clara, however, does not die, only falls into a state of catalepsy, but no one notices and is buried. She wakes up only when she is kissed by her brother, who has reopened the tomb to see her one last time and goes to Paris with him to find her daughter.