Jack is reliving the same day over and over so he seeks help from a therapist and stumbles upon a murder.
Jack tries to save the girl he saw murdered the night before by duplicating the day, but he can't seem to find her again.
Jack searches for the murdered girl at the campaign office of Paola Foust and hatches a plan to save her before the day resets at midnight.
Sunday the 22nd. Harper Ross puts a plan in motion to bring down her boss, Paola Foust, but things do not go according to plan.
Jack tries to find his friends but no one shows up where they normally do. Meanwhile a new villain puts Paola Foust to the test.
Together with Harper and Jessica, Jack puts a new plan into motion to end the day, save Harper Ross, and bring down Paola Foust but an unexpected complication arises.
Jack teams up with Darwin to put a new theory of why the day is resetting to the test. Jessica teams up with a new friend while Harper takes matters into her own hands.
Jack tests Paola to see if she is aware of the day resetting. Harper deals with a new problem and becomes more paranoid.
Harper urges Jack to do whatever it takes to end things so Jack takes the matters into his own hands and challenges Foust and Darwin to a showdown.
Jack must make a choice about what he believes; is he experiencing a supernatural event or is it all just a fluke? His choice will decide the fate of Monday the 23rd.