"When a billion-baht deal becomes a deal of the heart. She walked in to seize the bookstore... but ended up having her heart seized instead." Sai, a cold-hearted real estate CEO, steps into an old bookstore in the heart of Siam to close a land acquisition. But what she never expected was Nam, the owner who believes in the value of memories, would shake her world to its core. As deception turns into desire and business morphs into a matter of the heart... between the two of them, who is really being "bought" without even knowing it?