Leo (Randolph Scott) learns of the legendary Flame of Life, which holds the secrets of immortality and was discovered by his ancestor 500 years ago. With his friend (Nigel Bruce), Leo journeys to the Arctic to find the flame's final resting place. But the flame's guardian -- the immortally cold queen known as She Who Must Be Obeyed (Helen Gahagan) -- believes Leo to be her long-lost lover, Leo's ancestor.