"A young woman gets doubts about her relationship after getting engaged in Great Great Great. Lauren (Sarah Kolasky) is a 30 year old woman, who is living with her boyfriend of five year Tom (Dan Beirne). After hearing the news that her parents are divorcing, Lauren begins worrying about her future with Tom. The two of them spontaneously decide to get engaged, however at the same time Lauren reignites an affair with her new boss David (Richard Clarkin), who she had previously met years before... Altogether, Great Great Great is a compelling look at the complexities of relationships."

Credits and summary from the movie's website.