tmnt 2014 movie the turtle's tiger

sacks finds a baby tiger on his doorstep in sacks estate in the freezing cold. he decides to take the little baby tiger cub inside to heal her calling her tigress, as soon as tigress was all grown into a cub, healed and better she escapes sacks estate hiding in the sewers until she comes across 4 turtle kids. she stay's with them and splinter growing up. once tigress and the turtles got bigger and older they meet a young reporter, April O'Neil and Vern Fenwick to save new York from and deadly toxin getting released by the shredder the foot and sacks