Closure isn't coming easy to Barbie after her evening with Oppenheimer. It's even more difficult when she meets Neil Lewis, a single dad who takes an interest in her-someone who's a little silly and incredibly considerate. But what's holding her back from committing to him completely when things start to go well? Barbie realizes that in order to move on with her future, she has to go back to the past. And that means having to confront why she's so hung up on this single night affair, including reaping the consequences of seeing Oppenheimer just after the end of the war.