Using his marauding robot and other futuristic weapons, power-crazed scientist Professor Ravello carries out various plots to win the hand of Evelyn away from her true love Harry Peel.

A war blind painter marries his nurse. But after he can see again through an operation, he does not recognize her. Then she decides to leave him in order to return to his service under a different name. Only when the painter falls in love with her as a stranger to him, she reveal herself.