Toni Collette Tries to Keep the Spark Alive in First Trailer for Netflix's 'Wanderlust' (Exclusive)

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Matt Squire/Netflix

Toni Collette is struggling to keep the romance alive.

In Netflix's upcoming British dramedy, Wanderlust, Collette plays Joy Richards, a therapist who attempts to find a way to keep the spark alive with her husband, Alan (Steven Mackintosh), after a cycling accident causes them to reassess their relationship. The series, currently airing in the U.K., explores how we build happy relationships and asks whether lifelong monogamy is possible -- or even desirable. 

"Wanderlust looks at relationships, sex, monogamy and desire. But ultimately it's a profound and funny story about desperately clawing at a deeper life, a more profound existence," Collette exclusively tells ET. "It's about a woman who wakes up to her own existence, urgently feeling it's finite quality. This causes her to explore a different way of being, hence the title."

ET exclusively premieres the first U.S. trailer for the six-episode series, in which Collette's Joy expresses her desire to have a healthy sex life. "We've been together a really long time. I'd like to enjoy having sex and I'd like to have more of it," Joy says, before she and her husband introduce the idea of an open relationship to their teenage kids. Their reactions are priceless.

"Imagine eating at the same restaurant for most of your life and then one day, somebody tells you about another restaurant. Going to this other restaurant doesn't mean you have to stop going to the restaurant you've been going to all your life. It just means now you can do both, and the food that you've grown sick of eating, somehow now it feels different," Joy says, as a montage of her and Alan experimenting with their open relationship brings them together in unexpected ways while also testing the bonds of their marriage.

Written by playwright Nick Payne and directed by Luke SnellinWanderlust also stars Zawe Ashton and Royce Pierreson.

Watch ET's exclusive Wanderlust trailer below.

Wanderlust will stream all six episodes Friday, Oct. 19 at 12:01 a.m. ET/PT on Netflix.

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