Beauty tells Beast the dangers of the serum but he doesn't listen. So she starts to research more. Later she find his research notes in his lab and confronts him.
Beauty tells the Beast not to condemn his consumers to the same fate as him just for profit. Beast realizes what he's done is wrong and tries to make amends.
Beast realizes that he's going to die so he tries to find a cure.
Beauty confesses her love to Beast because she knows even a monster like him can change. He realizes he can donate his own blood to stop the mutations from worsening.
Adam succumbs to his mutation, a redeemed man.
Beauty becomes the new CEO, fires the old marketing team and hires new good people to work for her. She promises to make amends in the future and revamp the company.