I've read reviews that the story is predictable, but don't let that deter you. Take joy in Uhm Tae-Goo's performance, as well as the rest of the cast. Also beautiful is the drumming and singing...reminiscent of Native American pow-wows (along with some of the humor in the chants).
Some viewers start this movie thinking it's a rom-com, it is not. It is poignant and bittersweet. I very much liked it and will probably see it again in the future; but I do realize it is not for everybody.
A brain damaged 29 year old who desperately wants to do what he loves one last time and knowing he is on the fast track to dementia is human emotion on a deeper level. Or, like our main character when he sees the strays, maybe I just empathize too much