One of Pinkie Pie's greatest joys is making people laugh, but when she discovers that laughter can kill, that joy transforms into an ugly, disgusting nightmare that can only end in tears.

Meanwhile, the Cutie Mark Crusaders are off to the Everfree Forest to find and catch an elusive, needle shooting creature they heard about at school. Will they find it? Will they finally earn their cutie marks? You'll have to read the story to find out, now, won't you?