Pleasant Contract

Olivia and Ava Benny are twin sisters with very distinct personalities. After a party, when Ava drives off and gets into a suspicious accident - with only the necklace she was wearing found and no trace of her body - Olivia is forced to take her sister's place in a contract marriage. Years ago, their father had made an agreement with a businessman friend, arranging the marriage of their children. In this case, Fred Villa, now a successful CEO, was supposed to marry Ava, as stipulated in the contract.
However, with Ava's disappearance and possible death, only Olivia remains to fulfill the agreement. In this situation, can two people so different truly uphold their commitment? And is it possible for any positive feelings to develop between a couple who seem to treat each other like cat and dog?