What if Tris had a sister. Isabelle. Or Belle. Four has a best friend name Theodore Grant. Who does the same job as him. When Belle and Theo meet sparks fly. Twins are rare, in this world. Two and every 1 million children born are twins. There are only 10 sets in their whole world. 1 and every 0.01 percent of twins have different factions. That's why only one needs to be tested for their faction. There's none in their world that have different factions. Could these two be the first ones to ever be different? Cause it looks like Belle is 100% Dauntless. I DO NOT OWN THE BOOKS OR MOVIES. NOR THE CHARACTERS EXCEPT FOR BELLE AND THEODORE