One Direction with Harry Styles, Niall Horan, Louis Tomlinson, Zayn Malik and Lam Payne and Little Mix with Jade Thirlwall, Jesy Nelson, Perrie Edwards and Leigh-Anne. Being the biggest boy and girl band world wide. However, one of the girl band's sister had a strange war in one of the boy's band. Due to having collaborations and her sister, being Zayn Malik's girlfriend will took her long enough. But how come their fight became to something bond of love? How come both enemies fall in love to each other? Different concenquences can change too...