Trevor loved his dog , he used to play with them all the time, especially with Fufi, it was his dog and he loved him so much.
Fufi used to leave his house every morning, without them noticing it, this time Trevor did, and he followed her.
He followed her into a house that he didn't recognize, she enter to the back door, like she knew the house already.
When he knock on the door another kid open the door, and there was Fufi playing with another dog, when I told the other kid that Fufi was my dog he said No, that it was his, he tried to call Fufi but she didn't answer, because it turns out that she was depth.
Without them knowing that, that day Trevor came back to his home crying because he thought that Fufi wasn't coming back, then he told his mother what had happen.
His mother went to that kids house and talk to the mom of the other kid, the other kid's mom denied it and said that she bought that dog, when it was not true, Trevor's mom ended up paying the lady to get the dog back , when she did the other kid started crying because he also liked that dog, but Trevor didn't care, he was just happy to get his dog back.