Kati and Steffi have been best friends forever. Now that their love lives are heating up, they're hitting the books less and going out to nightclubs more. But when Steffi sees her father out with another woman, her life begins to spiral out of control. Steffi hatches an outrageous revenge plan against her father's mistress. Meanwhile, Kati begins a fun romance with an older man. As the two girls begin to grow apart, they realise that they need each other more than ever.