A dinner party in a country house that sees four friends come together for a birthday celebration. But as the night progresses secrets emerge and unsettling events begin to unfold around them.

After the untimely death of his mother, a teenager befriends his charismatic but troubled next-door neighbor and becomes embroiled in a world of addiction and violence just as the opioid epidemic takes hold of their small town.

On the last day of the first manned mission to Mars, a crew member of Tantalus Base believes he's made an historic discovery; fossilised evidence of bacterial life. Unwilling to let the relief crew claim the glory, he disobeys orders to pack up, and goes out on an unauthorised expedition to collect further samples. But a routine excavation turns to disaster, when the porous ground collapses, and he falls into a deep crevice and near certain death. His devastated colleagues attempt to recover his body. However, when another vanishes, they begin to realise; the life-form they've discovered is highly dangerous to all human life.