歐文歡迎126隊的新急救隊長，並且跟前妻重逢了。

火山噴發為奧斯汀帶來了浩劫。

歐文和格溫難以界定他們的關係。

歐文和格溫妮絲討論他們的未來。

被擾亂的葬禮和失控的醫院。

126隊的隊員面臨生命危險。

格蕾絲和賈德在遭遇恐怖車禍後奮力求生。

Owen懷疑一名連環縱火狂徒正在逍遙法外。

在追蹤一名連環縱火狂徒時，Owen成了頭號嫌疑犯。

Owen幫助Tommy解決一個私人緊急事件。

Owen makes a decision about his future. Tommy receives devastating news. T.K. and Carlos worry about adopting Jonah. Mateo gets his immigration status threatened after an altercation. A doomsday prepper gets trapped in a bomb shelter and The 126 and all of Austin brace for an asteroid crash.

Owen and the 126 deal with the aftermath of the asteroid crash in Austin while an even greater threat looms.