Because of a tragic past, the heart of Intuorn, also known as Alice, has been forged by hatred. She's consumed by vengeance and ready to do whatever it takes to destroy the life and love of Urajwasee, or Au (Hana Lewis), the half-sister she loathes. And now, the game of revenge is about to begin...

Alice's return to Thailand, even in just the first few days, causes cracks in the relationship between Au and Rames. Even Rames' carefully planned marriage proposal falls apart, all because of Alice’s scheming — aided by her loyal friend Tinnakorn, a young lawyer secretly in love with her.

Alice magnifies a small issue — Au's reluctance to let Rames abandon his future as a successful architect to become a freelance artist — and twists it into a major rift. Rames, unable to see through Alice’s manipulation, falls into her trap.

Unlike Rames, Au sees through Alice’s true intentions to steal her lover. However, her pride and temper often make her the "problem" in Rames' eyes. Even Krongkaew, Au’s mother, seems to side with Alice more than her own daughter.

Fortunately, Au has her best friend Kamolchanok helping her dig up dirt on Alice. But Alice isn't alone either — she has Benjaphat, her close friend and strategist; Rattakorn, her kind uncle and key business partner at their hotel; and Monwipha, her sweet, sympathetic aunt-in-law who adores her.

A major turning point arises when Alice tricks Au into believing she's been betrayed in love.

In a fit of emotional turmoil, Au causes a serious accident — and Alice ends up severely injured, losing something she deeply cherishes.

The only way for Rames to take responsibility is to break up with Au... and marry Alice instead.

This marriage, however, doesn't just break Au's heart — it devastates Rames and Tinnakorn, both forced to sacrifice their true loves. Even their mothers — Rungmas, Rames' mother, and Saowanee, Tinnakorn’s mother — are deeply heartbroken for their sons.

In a moment of slip, Rungmas reveals to Au that Rames never once slept with Alice after their wedding, confirming Au’s belief that Rames still loves her.

At the same time, Au uncovers a painful truth: Alice’s mother had falsely accused Au’s mother of having an affair with Alice’s father, fueling the resentment between the two families.

Determined to fight back, Au sets her sights on taking her revenge.

After the marriage, Alice's life is far from blissful. Though she has Rames as her husband, she never wins his heart.

On top of that, problems rain down relentlessly — from severe cash flow problems at Alice’s hotel, to her grandfather Prajak refusing to help.

Left with no choice, Alice and Rattakorn are forced to sell hotel shares to outside investors.

The cruelest twist of fate? The newly assigned investment consultant sent to manage the hotel... is Au herself.

Alice’s life spirals further when Au gathers undeniable evidence proving that Alice orchestrated the chaos during the marriage proposal party.

Au exposes everything to Rames and threatens to take the CCTV footage to the police.

But Tinnakorn, hopelessly in love with Alice, sacrifices himself by taking all the blame.

Alice is deeply touched by Tinnakorn’s loyalty — but ultimately, her heart still belongs to Rames.

How will this tangled web of love, betrayal, and revenge finally unravel?

And who truly lies at the heart of all this bitterness?