Here's what i have in mind, lets make it simple but meaningful. STILL TENTATIVE since my brain is still on a holiday.
Characters:
Gyuri - Kkingkkang, Nadia
Nicole - Mocha
Seungyeon - Puri, (Hedgehogs) Wonie
Hara - Pangie
Jiyoung - Jisuki
Scene 1: Gyuri is playing with Nadia, Walking with Nadia, Eating with Nadia, Taking a bath with Nadia
Scene 2: Nadia is getting dizzy, sick and weak due to being old
Scene 3: Gyuri's taking care of Nadia since she notice that nadia is sick. Gyuri told nadia "Mommy will come back early from work, okay? wait for me, i love you". KARA Members with their dogs arrived in park gyuri's house, fetching her for their rehearsal.
Scene 4: The KARA dogs notice that Nadia is not as hyper/active like before.
Scene 5: Malia randomly appears in the scene with the other dogs, and Malia told them what is happening with Nadia. The dogs were all shock about what they heard, they decided along with Malia to make nadia's remaining life to be happy.
Scene 6: Showing different scenes, Nadia's drink with them, Nadia's partying with them, Nadia's playing with them. (fast forward scene)
Scene 7: The next week, Malia showed them an article in a newspaper that there would be a dog talent contest in the next street.
Scene 8: Malia and the other dogs dress in a Mr Outfit
Scene 9: Its now their turn to show their talent, they dance Mr. in the stage along with Malia.
Scene 10: They eventually won the 1st prize in that contest. (A 1st class Meat with the dog trays like in ALL THE KPOP show)
Scene 11: They arrived home, The dogs and malia dedicated the meat to Nadia but nadia already passed away with a big smile on its face.
Scene 12: Everyone was crying, and Malia called everyone saying thankyou that everyone makes her Big sister happy.
Scene 13: Everyone wondered why Malia called Nadia her big sister.
Scene 14: A scene where the spirit of kkingkkang is coming out of Malia and goes to heaven along with Nadia
Scene 15: Nadia and Kkingkkang is happy and hugging each other in heaven.