Guests included Colonel Felt, brother of Countess Yvonne, and his wife Monica.

Minister Beaucourt arrives suddenly, in the past a companion in arms of the colonel and now his political opponent.

Beaucourt, who is in love with Monica, tells Felt that his plans to defend the borders have been rejected, and the colonel is outraged.

Meanwhile, the banker Glogan, an ancient lover of Countess Yvonne, arrives at the castle, who in the past has lent large sums to the colonel, who is unable to repay the money.

Beaucourt decides to take advantage of what happened to eliminate his rival, but in the end, thanks to Monica's intervention, knowing the true intentions of Glogan and the reasons that led Felt to kill, Beaucourt gives up taking action against the colonel.