FORMULA

When Larissa returns to work after maternity leave, the hardest part is supposed to be leaving her three-month-old daughter Ruby at daycare for the first time.

By the end of the day, the world has ended.

As a mysterious illness tears through South Africa, turning the infected violent, then feral, then something no one has a word for yet, Larissa and her husband Jim must transform their suburban Pretoria home into a fortress. Nobody prepares you for the exhaustion of new motherhood, but then again, nobody prepares you for the end of the world either.

With a dwindling supply of baby formula, a baby who doesn't understand silence, and threats on both sides of the fence, survival becomes about more than staying alive. As weeks turn to months, their small household grows, and so do the dangers outside.

Larissa discovers that the hardest questions aren't about how to survive - they're about who you're willing to become in order to.

Formula is a gripping, intimate story about motherhood, marriage, and the terrifying lengths we go to for the people we love.