NIGHTS, GAMBLED AWAY (1997)

After the death of her father, Maria travels to Berlin to visit her elder sister Helena, a dancer, who she hasn't seen for years. However, when she arrives in Berlin she finds out that Helena has quit dancing and now works as a croupier in an illegal gambling club. As the two sisters' relationship gradually becomes closer, Maria must draw Helena away from the underworld and help her overcome her dangerous addiction to gambling.