CONTRACT BOND

Saint - a dominant Alpha goes looking for a mate with a unique blood type in order to help his dying daughter.
Shin - a dominant omega having one of the rarest blood types in the world is offered a contract for an agreement to marry one of the most wealthiest, influencial man in Thailand.
What will be the turnout of this contract based marriage? Will the two with their conflicting values manage to build a profound relationship or will past and new obstacles find a way to keep them apart?