For two traumatic days, Livvy Higgs is besieged by a series of small heart attacks while the ghost of her younger self leads her back through a past devastated by lies and secrets. Tending to Livvy during her illness is her young next-door neighbour, Gen, a single mother, social-work student, and part-time drug dealer. Overnight, a violent scene embroils the two in each other's lives in a manner that will entwine them forever.