Kwon Soonyoung - a happy soul wanting to live in the moment and let the world carry him along this path he has created for himself. Lee Jihoon - a hardworking soul wanting to push forward in life and tries to work twice as hard as he did yesterday. And just as some kind of luck or fate or destiny (a dog) brought these two souls together, maybe living in the moment and or pushing yourself to be twice as better as you were yesterday doesn't have to be their life style.