Kyuhyun and Sungmin were madly in love with each other when they were kids. But when Kyuhyun had to leave for a very long time, that love disappeared. Sungmin has grown up to learn that love isn't forever.

One day Donghae wake ups from a terrible hangover on his friends bar. But little did he know that this day was a complete new day.    He meets new people He kills walkers He gets into fights