When students in their high school begin inexplicably exploding (literally...), seniors Mara (Katherine Langford) and Dylan (Charlie Plummer) struggle to survive in a world where each moment may be their last. As an unexpected romance blossoms between them, Mara and Dylan discover that when tomorrow is no longer promised, they can finally start living for today.

When renowned crime novelist Harlan Thrombey (Christopher Plummer) is found dead at his estate just after his 85th birthday, the inquisitive and debonair Detective Benoit Blanc (Daniel Craig) is mysteriously enlisted to investigate. From Harlan's dysfunctional family to his devoted staff, Blanc sifts through a web of red herrings and self-serving lies to uncover the truth behind Harlan's untimely death.