Meet Ellie Andrews, a young woman bursting with brilliance and ambition. She's recently landed a dream job as a secretary at a dream company. Surprises are in store for Ellie as she realises her job is to be the personal assistant to the big boss, who is none other than her college sweetheart, Oliver Harris.

Back in their college days, Oliver was quite the popular, sweet, and charming fellow, while Ellie was the brainy, quiet girl nursing a secret crush.

Now, when Ellie steps into Ollie's world as his secretary, she's in for a surprise. Ollie has changed. He's gone from Mr. Sweet to Mr. Grumpy—always distant and often a bit cold. But Ellie's got skills; she's a smart cookie with an unbreakable will, and she quickly becomes the go-to person at Ollie's company.

One day, when there is a big blackout and the entire city is plunged into darkness, Ellie’s fears lead her to find solace in Oliver’s arms. Ellie and Oliver find themselves alone in the office. In that dimly lit space, a moment of vulnerability leads to a passionate, totally unexpected kisses.

That kiss? It's like a spark that lights up a fire of attraction between them. Oliver, drawn in by Ellie's smartness and totally enchanted by her lips, throws out a proposal that's tempting as hell—a purely physical fling, no strings attached. Ellie, secretly carrying a torch for Ollie for years, can't resist, even though deep down, she's hoping for something more meaningful.

Their secret affair unfolds like a whirlwind, and Ellie is pretty sure that love is growing between them. And then comes the big news—she’s pregnant. She's on cloud nine, thinking about a family in the making. But her joy takes a nosedive when she discovers a secret that breaks her heart. Feeling hurt and deceived, Ellie decides to keep her pregnancy a secret from Ollie, afraid of how he'll react.

As misunderstandings, secrets, and their hidden desires create a gap between them, will they ever figure out that real love needs honesty and trust?