Elena Adrian, a jewelry designer, rescues a stranger fleeing from pursuers on a torrential rainy night. Five weeks later, she finds out she is pregnant, only to be forced by her stepmother to marry Kane, the cold-blooded heir to the Alexander Group, as a substitute for her elder sister.
Little does she know that her arranged husband is the biological father of her unborn child.
Bound by a 30-day marital contract, caught up in a fraudulent paternity test, and drawn into the long-concealed jewelry legacy cases left by their respective late mothers, the two go from being wary of each other to joining forces to strike back.
