Responding to an urgent call for assistance, Smithy arrives and has to deliver a baby in the street. Worried about the mother's condition, he investigates her background, and discovers a history of prostitution and drug abuse. When she vanishes from the hospital and abandons her newborn baby, Smithy has no choice but to inform her father, who subsequently reveals that he and his wife will be adopting the baby and bringing it up as their own. Smithy enlists the mother's help to catch her pimp, who is also dealing drugs in the process, by setting up an obbo to catch him in the act. However, the obbo goes badly wrong when the girl makes off with the drugs and tries selling them herself to local users.