In the present, after serving 15 years in prison for the murder of Alexandra Forrest, Daniel Gallagher is paroled with the goals of reconnecting with his family and proving his innocence. In the past, 2008, Dan celebrates his 40th birthday and first meets the charming colleague whose death would eventually lead to his incarceration and the destruction of the life he knew.

In the past, an intensely passionate connection turns sour when Dan realizes Alex wants more from him than the impression she's been giving. In the present Dan’s loved ones reel from his reappearance in their lives. Dan and Mike are reunited and Ellen discusses her hopes for her relationship with Dan with her therapist.

In the past, a look into Alex’s personal and professional life outside of Dan and a retelling of the events of their affair from her perspective. In the present Dan reconnects with Beth and hoping to find evidence to exonerate himself, begins his investigation with Mike resulting in a visit to Brooker.

Further in Alex's past, before she met Dan, is reflected through her time spent with Emma and Clay, two people whose kindness and help she was incapable of accepting. Dan's world crashes down around him when he is arrested for killing Alex and must enlist an unlikely source for help.

The collision course Dan set for everyone around him plays out in both the past and present. Dan tries to move forward with regret and honesty, agreeing to continue at Jorge's firm and revealing to Ellen that the judge denied his appeal. When Mike and Dan are invited to brunch at Beth and Arthur's home, it becomes clear he is surrounded by secrets.