As the golden California sun washes over the Forrester-Logan beach house, all seems calm—on the surface. But behind the windswept dunes and glistening surf, Luna Nozawa is waging a silent war, and her battleground is the heart of a child. Long haunted by her own separation from someone she once cherished like a son, Luna has returned with a chilling new obsession: Hayes Forrester.

Steffy Forrester is blissfully unaware of the storm gathering around her. She’s focused on preparing the perfect birthday for Hayes—pastel balloons, delicate ribbons, and a celebration filled with laughter. But even her meticulous planning can’t shield her from what’s to come. Luna lurks at the periphery, binoculars in hand, studying every affectionate touch, every maternal lullaby Steffy offers her son. To Luna, it’s more than jealousy—it’s justice. In her mind, she was wronged, and now, she seeks redemption by becoming what Steffy is: Hayes’s safe haven.

Luna’s manipulation begins gently—porcelain dolls left at the door, plush woodland toys placed near the porch, pastel blankets folded just so. Hayes begins to respond, smiling at the mystery gifts. And Steffy? She’s touched, though vaguely uneasy. But it’s not enough for Luna. Her final act will unfold during Hayes’s birthday party, where guests like Zoe Buckingham and Daphne Rose distract Steffy just long enough.

Wrapped in soft silk lies Luna’s final play—a lifelike doll, almost breathing. With Steffy momentarily occupied, Luna plans to hand-deliver her gift to Hayes, whispering, “Happy Birthday,” laced with sweetness… and veiled menace. One gesture, one moment, and Luna hopes to crack the sacred bond between mother and son.

But fate rarely obeys even the most intricate plans. What Luna doesn’t expect is how this single act will ripple through the Forrester-Finnegan family, turning a child’s birthday into a nightmare no one saw coming.