animal tf story helping north

a young boy was heading to the north pole to visit his sister who he had found out had been abandon there due to mdical costs they claim. the boy andy was heading there and was told by note to bring fish for some reason on arrival he sees a young walrus family and the female looks at him interestnigly so he decided to give them fish then he gets tackled by the feamle who licks him distracting him as he changed into a walrus and figures out the female is his sister and that family reasons is why they had to be seperated so they could learn about their animal lifes.