these 4 teens were separated at birth, to different, some good some bad places. Leonardo was placed with a middle-aged man, who owned a dojo and who trained the boy ninjitsi. Raphael was with A family with an older sister an 2 mothers, they were a little strict but overall very nice people. Donatello was placed with an Abusive father, who took advantage of the small boy in any way he could.. and finally Michangelo was still in the orphanage. He actually found it quite peaceful..well except for the ugly miss morris! when these 4 brothers meet at the school..they at first think how strange it is that they feel as if they've seen each other...but become the closest friends...well maybe it takes a while for Donatello to trust them...and for Leonardo to accept him...