Lee Seung Gi and Go Ah Ra have been friends since they were kids but Lee Seung Gi leaves so he can make his dream of becoming famous true, soon he forgets everything about his best friend he left behind. 

The problem is, Seung Gi doesn't know the accident Ara had...

What happens when they cross paths again? Will they be able to move along together or will they just forget about each other but this time for the rest of their lifes?