Five street teens break into a house in a rich Dublin suburb for a night of partying. But games are twisted into something more emotional and ultimately out of control through a series of surprising revelations.

Pig and Runt born on the same day, in the same hospital, moments apart. Twins, all but by bloodline. Inseparable from birth, they are almost telepathic. They are one, needing no one else, inhabiting a delicate, insular and dangerous world where they make their own rules and have their own language. But days before their 17th birthday the balance of their world begins to shift. Pig's sexual awakening and jealousy begins to threaten their private universe.

Lyla and Louis, a singer and a musician, fall in love, but are soon compelled to separate. Lyla is forced to give up her newborn but unknown to her, he grows up to become a musical genius.