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 to start a new chapter in this unfamiliar seaside town. Fraser longs for Mark, a friend he left behind in New York, and seems uninterested in connecting with the other teenagers on base – until he meets Caitlin.

A fracture begins to form within the friend group following Caitlin and Sam's breakup. Maggie attends the Chioggia Festival with the neighborhood women and finds an unexpected companion. Meanwhile, the progress Colonel Wilson has made in her new role is derailed when she decides to deploy her troops early--and her complex relationship with Fraser is rattled.

As the power struggle between Sarah and Richard escalates, the relationship 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 as he dives deeper into Islam, and Fraser forms his own connection with Jonathan.

The friend group fractures even further over their hatred for Colonel Wilson, whom they blame for a tragedy that's rocked the base. As Caitlin momentarily pauses her self-discovery journey and Danny fully commits to his, Richard's insubordination reaches a breaking point, forcing Wilson to make a difficult decision.