Five best friends. Kirsten the prankster. Christian the mysterious one. Alex the dad of the group. Christina the flirt. Five pop stars. Harry the flirt. Liam the dad of the boys. Zayn the mysterious one. Louis the prankster. You may be thinking you said five each time where's the fifth person? Well he's what they have in common; Niall the boy who laughs at everything. Five common people. Five international pop stars. One boy to bring the together to make the ten best mates in the world.