Both kids like to play with this little choo choo train, and I'm not entirely sure why, it's just a simple little train. The boy has a little puppy and a little stuffed choo choo train that he sleeps with a night. Now, every day before little brother goes to bed, the boy pulls out his stuffed puppy and stuff choo choo train, lays them down on the living room floor. He then goes to find little brother's puppy and choo choo train, lays them on the floor. He then sings them the good night song, and pretends to put them to bed. It's adorable.