Adam Raki (Hugh Dancy) is an electronics engineer with Asperger syndrome who struggles to catch irony or sarcasm, to empathize, or to master simple social situations. When a young woman named Beth (Rose Byrne) moves into his apartment building, he does his best to reach out to her. Though she does not quite know how to react to Adam's unconventional overtures, she decides to give him a chance. But Beth’s family problems interfere with their budding romance, and may force them to end their relationship before it has a chance to begin.