登山客在阿帕拉契步道迷路了，還不小心發現了一個古老的秘密，來自異世界的物種正悄然逼近，現在，他們的生命即將受到威脅，這群登山客該如何全身而退呢...

It tells the story of three doctors returning to post-pandemic frontline medicine after maternity leave, having to balance the demands of the NHS and being a parent....