Series premiere. When Sarah Wilson is named the new commander of a difficult military unit in Chioggia, Italy, she uproots her wife Maggie and teenage son Fraser from their lives in New York to start a new chapter in this seaside town. While Sarah and Maggie deal with their new life, Fraser seems uninterested in connecting with the other teenagers on base till he meets Caitlin.

The arrival of Caitlin’s period accelerates her secret desire to experiment with her gender expression. As she and her brother Danny continue to clash with their mother Jenny, Caitlin’s relationships with her dad and Danny’s best friend Craig deepen. Later, Fraser discovers Caitlin’s secret, which forever changes the nature of their relationship.

The dynamics of the friend group shift following Caitlin and Sam’s breakup. While Sam turns to the open arms of Britney, Caitlin is judged for spending more time with Fraser. Maggie attends the Chioggia Festival and finds an unexpected companion in Jenny. Meanwhile, the progress Colonel Wilson has made in her new role is derailed when she decides to deploy her troops early.

With his deployment timeline fast-tracked, Craig spontaneously proposes to his Italian girlfriend, Valentina. Determined to ship him off with a celebration he’ll never forget, his friends pool their resources for a Hawaiian-themed wedding that leads to an evening of debauchery.

As the power struggle between Sarah and Richard escalates, the bond between their wives continues to grow, and Sarah fuels the fire by spending time with Caitlin on the base’s virtual shooting range. Later, Caitlin asks Fraser for help making a bold statement; Danny questions Jenny about his biological father and Fraser forms his own connection with Jonathan.

Sarah is thrilled to learn about her son's burgeoning friendship with Jonathan and, grateful for a strong male influence in Fraser's life, encourages them to spend more time together even if Maggie doesn't understand. Richard uses a father-daughter hunting trip to get inside Caitlin's head. Later, Sarah receives a phone call that will forever alter life on base.