From Deceived Stand-in To Billionaire

Brinley goes to the bank to buy their dream house. The clerk tells her the marriage certificate is fake. She goes to her husband Colin's office and watches through the glass wall as he kisses his first love, Milly. He admits she was just a substitute. She doesn't cry. She calls her father and agrees to an arranged marriage with Austin, the youngest son of the Moor family.

Three months later, at a charity gala, Colin and Milly try to humiliate her. The host's butler arrives and escorts her to the VIP lounge with full respect. Austin is there. He drapes his jacket over her shoulders, tells the room she's his wife, and warns anyone who touches her will face the Moor Group. She starts her own real estate company and becomes CEO. Back at his villa, she sneaks into his study and finds a hidden compartment — it holds her design sketches from university, which she thought were destroyed in a fire years ago. Her father tells her the marriage was arranged because her mother once saved Austin's mother's life. The Moors have been waiting for her all along.

On the rooftop, drunk and confused, she asks him why he married her. He doesn't answer. But the sketches in his study already say more than words. In the end, she secures a prosperous business and true love.