When Poppy’s ex-husband, Ron, gets serious with his latest girlfriend, Poppy has to deal with the reality of another woman helping to raise her kid. The secret gets out that Sophie has a crush on Graham, which causes a stir not only in the first-grade classroom, but also between Angie and Will. Meanwhile, Miggy gets cold feet after asking Douglas to remove his tattoo of Zara’s initials, and Douglas has to help him realize that his relationship with Zara is officially over.
Douglas agrees to babysit the kids on Valentine’s Day, but when Graham finds himself in a Valentine’s Day emergency and Big Red shows up unannounced, Douglas and Big Red band together to help Graham. Meanwhile, Will and Miggy celebrate “Palentine’s Day” together – a day honoring the love of two friends – but when they run into Angie at her second job, they help her finish her deliveries so she can be with Owen on Valentine’s Day.
Douglas discovers that Amy is a math genius and is overwhelmed with how much time he has to spend to treat his daughters as individuals for the first time ever; this eventually leads to Emma moving into their private shed to get some space from Amy. Meanwhile, Graham makes a new friend at school, causing Angie to have to spend time with his new friend’s mom, Nora, to Angie’s chagrin. After Angie meets Nora in person and enjoys spending time with her, Poppy starts to grow jealous of Angie’s newfound friendship.
Will wants to get back together with Mia, but as their relationship progresses, he finds himself having to choose between the “normal” family he’s always wanted and the new family he’s created with Angie, Poppy, Miggy, Douglas and the kids. In order to get Will to come back to his senses about Mia, Angie kicks him off thea babysitting grid and fills the spot with Dr. Mark, Douglas’ rival dermatologist, much to Douglas’ chagrin. Meanwhile, Graham is nervous to compete in the talent show and relies on Will to calm him down when he gets nervous on stage.
When Will’s ex, Mia, shows up unexpectedly for Sophie’s birthday, Will gets frustrated that she undermines his rules with Sophie. Angie tries to help Will cope by having a fun girls’ night at her place and by giving some co-parenting advice, but Poppy reveals and Will quickly learns that Angie isn’t the best advice giver. Meanwhile, inspired by Mia’s humanitarian work, Miggy and Graham decide to give some items to charity but regret it immediately and seek out help from Douglas to get the items back.
Will decides to audition for his dream job as an on-camera weatherman, but in order to succeed, he needs a little help from Miggy, Poppy and Sophie to hone in on the perfect persona. Meanwhile, after Angie discovers that Graham has the word “FARTS” written on his forehead in permanent marker, she goes on a mission to obtain an apology from the responsible parties – Emma and Amy – and unfortunately Douglas does not provide much help.
When Owen shows up unexpectedly on Christmas Eve with a gift for Angie, she desperately seeks out help from Will finding a present for Owen last minute. While doing so, Angie learns how bad Will is at giving Sophie good Christmas presents, or so it seems. While Graham begins to doubt the existence of Santa Claus altogether, the group worries Miggy may still believe in him. Meanwhile, Douglas invites Poppy, who is dealing with her first Christmas without Rory, to compete in a series of cutthroat Christmas-themed competitions.
Will is thrilled to throw the first-grade parent social so that he can use this event to springboard his anti-smartphone platform to get parents to wait to buy their kids cellphones until eighth grade. He ropes his new love interest, Dr. Dewan, into helping him, but his plan doesn’t work out quite like he had hoped. Douglas offers to have the social at his house so he can exact revenge on his rival dermatologist, Mark, whom Douglas is convinced stole his prized pen.
Will encourages Angie to rediscover her passion for heavy metal music by taking a guitar class, and in turn, Angie insists that Will get back in the field covering weather by driving both of them into a storm. Meanwhile, the rest of the gang explore their romantic passions as Douglas pursues his crush on Big Red with the help of Miggy, and Poppy feels an instant connection with a dreamy musician.
When Graham and Rory are cast in their school’s production of “Grease,” with Graham as the lead and Rory with a lesser known part, Poppy and Angie get involved and try to appeal to the drama teacher, Dr. Biscuits, to make changes. Meanwhile, Will is not ready to tell Sophie that he’s seeing Dr. Dewan, so against his better judgment, he takes Douglas’ advice and lies to Sophie.