Some moments change everything. For five friends, what should have been a birthday to remember will instead cleave a line between before and after. From then on, the shockwaves of guilt, sorrow and disbelief will colour every day, every interaction, every possibility. Each will struggle. Each will ask why. Secrets will be kept. Lies will be told. Relationships reassessed. Each friend will be forever changed. And the question all of them will be forced to ask is: can they ever find a way to live without what was lost?