Crush Ball (2004)

Kay is a typical 20-year-old, happy and often bickering with her sister Suzy, a computer expert, and her brother Mike, a talented Dodgeball player. Their mother Sally has managed their household since their father Robert vanished years ago. When Mike uncovers the truth about his father's disappearance, he begins a search for answers. Kay discovers that the mystery is connected to her own past and her ties to the Lee clan, a secretive group involved in the dangerous game of CRUSHBALL. Facing her first game, she confronts Jin, the game's most formidable and destructive player. As Kay struggles to understand her true identity, will she become a worthy CRUSHBALL player for the Lee clan and protect her adopted family? This action-mystery explores the power of family and the unexpected connections between two families.