Choi Sulli is like a little kitty, roaming with her ummas, Krystal, Luna, Amber, Victoria, Taeyeon, and Tiffany. Following them all around, everywhere. During the interviews with her members and other group members, she'll just cheer whenever there is something impressive; to her, she'll just burst out a cheer which will make her oppas and unnies or dongsaengs, burst out in laughter. During live peformances, she'll act calm but smile, like a little kitty. But, she meets a dog, her enemy, Taemin, the maknae of Shinee.

Lee Taemin acts like a doggie, a little cute doggie but a mean one in the inside when not on interviews, variety shows, or live peformances. He can be nice and playful and cuddle with s, Minho, Key, Jonghyun, Onew, Heechul, Kai, Sehun, anybody. He'll bark out of nowhere on shows, which will make his dongsaengs, noonas, or hyungs burst out in laughter and he'll get embarrassed. Taemin will stay calm at certain times, but not when he meets his kitty, his enemy, Sulli, the visual maknae of F(x).

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What happens if their manager decides to put them in a show together that the manager had created called, Hello Doggie and Kitty? A show that tries to make two people that do not get along, get along of course. Will they succeed?