Mother's Day is a big day in Chatswin. Eden thinks this particular holiday may be bringing up some repressed feelings Tessa has for her MIA mom. She's also feeling the need to finally consummate her relationship with George. Too bad he's not able to perform thanks to some ideas Noah put in his head about hurting the baby. Eden believes George should worry about his own kid first. She truly believes Tessa is upset about the mom thing. George assures her that his daughter is just fine.
Dallas has some snazzy gold sneakers to for the Mother's Day 5k. She's bummed to learn that Dalia won't be waiting for her at the finish line. That's because her daughter has decided to spend Mother's Day in Israel with her father. On the bright side, Dalia promises to eat a kabob in her honor. Dallas takes a big lead during the race until she hurts her ankle and has to be taken to the hospital.
Lisa is still awaiting DNA test results to prove that Shelia isn't really her mom. That's why she doesn't want to participate in all the festivities Fred has planned for Mother's Day. DNA results ultimately prove that Sheila is, indeed, Lisa's mother. As for Sheila, she wins the Mother's Day 5k. Her victory celebration includes a live performance by her favorite music artist, James Ingram. Fred had no idea the two of them used to date. That's not the only secret Sheila has been keeping. Lisa realizes that she's not the one who is adopted. Ryan is.
Noah and Jill are going with an "endangered animals" theme for their nursery. Eden gets a look at the truly disturbing room during the Werner's truly disturbing baby shower. The stress of the situation leads to some mild discomfort. Eden is rushed to the hospital. All is well, as it just was false labor.
George lets Tessa know that he knows she got a rejection letter for her internship with the Village Voice. He's bummed when she won't discuss the matter with him. Tessa heads off to see Dallas, who believes Yakult is talking to her (in a voice that sounds a lot like Whoopi Goldberg) thanks to her painkillers. Dallas also longs to see Dalia. This bums out Tessa.
Tessa realizes that she never thought about her mother before moving to Chatswin. She breaks down in tears on the ride home. When she finally arrives, a woman is waiting for her across from the house. Tessa recognizes her from some old photos. It's her mother's mother. This woman is staring lovingly at the granddaughter she never knew. As for Tessa, she's staring at the chance for a way out of Suburgatory.