社区大学“格林德尔”迎来了新学期，由Jeff（乔尔·麦克哈尔 Joel McHale 饰）领导的七人学习小组一同选修了生物课，却因为选课限制，小组成员之一的Pierce被排除在外，这件事很快就引起了小组的分化危机。然而等着他们七人的是更大的危机：格林德尔学院的经费被切断，学校陷入了一贫如洗的境地。为了节约经费，院长让疑似患有精神病的昌担任保安，埋下了一颗危险的炸弹。
与此同时，好基友Troy和Abed终于宣布同居，小组成员一同来到他们的新居作客，Jeff却无意中创造了“六个独立的平行空间”，在六个不同的空间里，七人有着截然不同的命运。这究竟是Abed的幻想，还是真实的存在？
Anna Pigeon is a former city slicker who became a park ranger after a devastating loss changed the trajectory of her life forever. While Anna tries to outrun her demons, her focus turns to solving crimes that have taken place within national park grounds, no matter who or what gets in her way.
The series is based on the novels by Nevada Barr.
