Before I explain... I just wanted to say that everything you read from my theory may not be true! It is just what I think the MV and song means and the meaning behind it and what it's about. So bare with me and don't get mad if you disagree. Also, if you haven't seen the Got7 Miracle MV, please go watch it and read the meaningful lyrics if you haven't yet.
Ok, so in the beginning of the mv, you see a little girl. Clearly, if you close up on her lips, they're very pale, that shows that she is sick. Which is why she is looking miserable and why she cannot go outside and play with the other children. Ok, here is something interesting... She is actually an orphan, yes. The other children outside are the other kids from the orphanage she lives in. Ok moving on from that, you can see that she falls asleep cuddling a snow globe. She thinks that if she can't go outside and play in the snow, she can imagine she is by holding a snow globe with her.
After she falls asleep, she dreams about a miracle, a miracle about ghosts lading her through life. They help take care of her and makes sure she is safe, similar to spirit angels. But you see, in her 'dream or 'miracle', what ever you wanna call it, her lips are healthy and no longer pale.
Alight, now this is where Got7 comes in. So, Got7 are her spirit angels, they take care of her when she needs them, like when JB is dressing her or even when Mark opened doors for her. And she's so happy in her miracle, but then you know, she can't see them since they're her spirit angels. Skipping to the end of the MV. You can see Jinyoung handing out his hand to her hand, BUT, if you pause when the camera is close up on Jinyoung's face, you see his hand out to the camera, and if you look clearly, there is 2 members standing behind Jinyoung. One member on his left side and one on his right. It looks like he has angel wings, coincidence or not? It would make sense, since Jinyoung is one of her 7 spirit angels. If you don't believe me... go on the MV and take a look yourself ;))
And you must be wondering why or how she could see the members at the end of the MV. Well, you know how she was sick before she fell asleep? Well, here is the thing... You can't see angels unless you are in heaven after you die. Yes, she died. That is why she didn't wake up at the end of the MV, which is why she could finally see the members, her spirit angels.
Ok guys hope you enjoyed my Miracle theory ;) Sorry if there is a few mistakes but I hope you understand the Miracle MV.