Finn M'Coul, the hero of Irish mythology, is assigned a new case by his boss Viledark, a monstrous hoglike being and an immortal shapeshifter. Together they run a private detective agency on Capitol Hill in modern-day Washington, D.C. A retired general has hired them to find his missing nineteen-year-old son, who appears to be involved with a new drug. Shotweed increases the male orgasm many times, in both duration and intensity, and is on the rise in the local gay community. It is highly addictive and may be fatal, and it only works on gay men. Finn's search leads him to a psychotic supervillain who is unleashing deadly mischief for his own perverse entertainment. Drugs, monsters, and a man with a hook stand in Finn's way as he works to save a beautiful boy and others like him.