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Macaulay and his estranged dad build a backyard steroid empire in north Wales. What begins as a chance to earn a few quid becomes a global operation and a ticking time bomb.

As the steroid lab thrives, father and son grow close, but greed creeps in. Macaulay finds out he’s being short-changed just as police close in. Trouble is coming.

Macaulay returns with a pay rise, but the trust is gone. As police close in, so does paranoia, and the truth about addiction to steroids is exposed.