Nocne graffiti (1997)

Marek Kossot, a special forces soldier, discovers that his niece Monica is a drug addict. Wanting to cut the girl off from the source of the goods, he tries to intimidate her dealer and also her boyfriend, a certain Coke. The drug bosses are alarmed by Mark's action and send their men against him. The brutal intervention proves effective only up to a point. When Monica collapses after an overdose, she organizes a good squad from her former charges and starts a war against the drug mafia....