Marilyn wants to learn to drive and after she turns Joel down, she accepts offers from Ruth-Anne, who's terrified by the experience, and from Chris who uses his time in the passenger seat to expound upon the Zen of driving. Elsewhere, as Maggie turns 30, she must come to terms with reaching a year that Maurice describes as leaving youth behind and entering the middle years. As she camps out in the woods, sending letters to those in her past down the big river but as she wakes the next morning, she finds the ghosts of her boyfriends having a picnic in the woods and they're not happy with what she's written about them.
After Maggie's bloodwork comes back, Joel and Ed scramble to find her; Maggie, it seems, is hallucinating because of fever due to appendicitis, and will need immediate surgery.
Marilyn decides she misses walking too much to continue with driving lessons.