"30 Days Without an Accident" is the fourth season premiere of the post-apocalyptic horror television series The Walking Dead, which aired on AMC on October 13, 2013.

Elsewhere, Glenn Rhee tells his wife Maggie that she should not accompany him on the supply run scheduled for later that day.

Carl criticizes a group of the prison's children, Lizzie (Brighton Sharbino) and her sister, Mika (Kyla Kenedy), among them, for naming one of the walkers at the fence.

Rick leaves and encounters Michonne returning to the prison after unsuccessfully hunting for The Governor, and she shares her intention to travel to Macon County to continue her search.

Before leaving on the supply run, Zach (Kyle Gallner) says goodbye to Hershel's younger daughter, Beth, with whom he has formed a relationship.

Bob Stookey (Lawrence Gilliard Jr.), a former army medic and a new addition to the group, volunteers to go along to earn his keep; after some hesitation, Sasha allows him to come.

The rest of the group escapes as a wrecked helicopter falls through the roof, destroying the store and the remaining walkers.

Rick is checking the traps when he encounters a woman named Clara (Kerry Condon), whom he initially mistakes for a walker.

Seeing that Daryl is surprised by her apparent coldness, she tells him that she does not cry anymore, but is glad to have spent time with Zach.

The episode marks the promotion of Emily Kinney, Chad L. Coleman and Sonequa Martin-Green to series regular positions.