When imaginative eleven-year-old Emma and her parents and friends go to a remote island in the Pacific Northwest during the summer of 1985, she thinks it’ll be a normal family vacation.

But when she starts dreaming of her loving Grandma Virginia killing people, she realizes there’s more to the sweet matriarch than she thought. And when she has a premonition that her grandmother intends to kill her husband, she knows she has to take matters into her own hands.

When she foils Virginia’s first plan to murder Grandpa Roy, Emma becomes a target herself.

Allied with her friends, Emma must differentiate between make-believe and psychic visions to try to save both her grandfather’s life and her own.

After ten years online, she is a master at her trade: scamming her fans. But her once-bright internet stardom is blinking into oblivion. The brand deals are drying up, the views are plummeting, and even her haters no longer care enough to snark.

When she spots an ornate, scarlet envelope sitting outside her high-rise condo, she realizes her luck is about to change. It’s an invite to an exclusive brand trip for the new energy drink company, Excelsior. The answer is easy: Yes. Even if she has to tolerate hours with the peers that surpassed her.

The worst she expects is a blow-out fight or two (filmed, of course, from multiple angles). But no one anticipates joining a different kind of Mile-High Club: witnessing the death of their frenemy at 30,000 feet. Still, the most tragic news of all is that there’s no internet on the island, no turndown service, and only each other and their shared grudges for entertainment.

As the backstabbing turns literal, and more influencers die in awful, strange ways, the dwindling group can no longer deny the obvious: someone gathered them there to die.