, Jennifer Garner is a welcome addition to the cast of the Starz comedy as Evie, a film producer who falls for Henry (Adam Scott) and starts spending more and more time with him while he spends time working for the titular catering company.

By episode four, «KSGY-95 Prizewinner’s Luau,» which debuted on Friday, their relationship is in full swing when the two decide to spend his latest shift working a pre-concert Malibu luau on mushrooms.

But they're not the only ones who decide to take the hallucinogenic, with the rest of the team -- played by Martin Starr, Ryan Hansen, Tyrel Jackson Williams and Zoë Chao -- joining in on the hilariously unexpected adventures that follow, especially for Garner's character, whose emotional ups and downs allow the 50-year-old actress' comedic chops to really shine. «It was terrifying,» Garner tells ET's Will Marfuggi about learning what she had to do in the episode. «Any time I have to play inebriated or any altering anything to me, I don't have a lot of experience but Ken Marino really held my hand and he was amazing director.»She adds, «He really made me feel good as one can feel when they are standing on their head.» «It was a fun episode to direct, for sure,» Marino, who returns as the catering team's struggling boss, Ron, says about helming the episode, while the rest of the cast dishes on Garner's performance.

When it comes to Evie's journey in the episode, she not only struggles to act as Sackson's (Williams) spiritual guide while he experiences his first high on mushrooms but she also spends time reflecting on where she's at in her career and what she should do next. «When I was starting out, I really thought I was going to make important independent cinema,» Evie says about the.

'Party Down' Cast Dishes on Jennifer Garner's Hilarious Mushrooms Episode in Season 3 (Exclusive)

Related News