In the mid-season finale of Firefly Lane, ’80s-era Kate (Sarah Chalke) asks her best friend Tully (Katherine Heigl), “What would I do without you?” In the second half of Season 2, Kate will forced to be find out as she begins breast cancer treatment without her lifelong best friend by her side.

The two were still not speaking at the end of the first half of the season, following a near-tragic car accident that shattered their relationship. But as we can see in the opening minutes of the second batch of episodes, which you can watch above, Tully is never too far from her thoughts.

Actually, she’s at the center of Kate’s daydreams, beginning with a flashback to the girls’ childhood accompanied by a rad ’70s track, “(Don’t Fear) The Reaper” by Blue Öyster Cult.

This scene — which sees Kate hallucinate her younger self with older Tully, and vice versa — is “the only scene we ever did in the show where you mix of those characters” creator Maggie Friedman tells Tudum, which saw Chalke and Heigl act alongside Roan Curtis and Ali Skovbye as their teenage counterparts. “It was so fun for the actors to get to shoot that sequence. They never get to be together in scenes because they’re in totally different timelines, so I think that was really cool.”

Everyone in Kate’s life is deferring to her needs — husband Johnny (Ben Lawson) dutifully holds her hand through chemo, while daughter Marah (Yael Yurman) agrees to let Kate take her dress shopping for the winter formal, an idea she most certainly would’ve shot down a few months prior. 

In fact, maybe they’re all being a little bit too deferential. Kate rushes outside to get some fresh air and finally gives her best friend a ring. “It’s Kate, by the way. Mularkey,” she says while leaving a voicemail, hopefully indicating that a reconciliation isn’t too far off.

“Kate is missing Tully and she’s going through the hardest thing she’s ever gone through in her life and she doesn’t have her best friend and soulmate with her. It’s really hard,” explains Friedman. “She’s usually a caretaker. To be the person who’s being taken care of, it’s very uncomfortable for her. The cancer puts a spotlight on her in a way that she’s not used to and it’s uncomfortable. She obviously loves her family and she loves that they’re taking care of her, but really she’s still missing Tully. It’s a missing piece for her in her life."

Find out how those pieces fit back together when Part 2 of Firefly Lane Season 2 debuts April 27.