Dan Vasser's freewheeling travels through the decades, reunite him with his long-lost fiance Livia, which complicates his blissful, present-day life with vivacious wife Katie and son.
Dan can’t help wondering if he imagined his time traveling journeys and decides to get an MRI. Later, Dan and Katie decide to take a romantic weekend getaway but their plans are interrupted when Dan disappears during the flight. Dan's latest mission sends him back in time to help deliver a baby.
Things have just begun to heat up between Dan and Katie when Dan pulls one of his disappearing acts. This time, Dan travels 18 years into the past to warn the people of San Francisco about an imminent disaster as well as trying to save a man from a life of addiction and misery. Meanwhile, Katie has found out that Dan has deceived her and been in touch with his past love, Livia.
Katie prepares for her big charity gala but is devastated when Dan goes missing. Dan's latest mission takes him back to 1995 to help a young woman on a blind date. Livia arrives to help Dan with his mission but she seems to have more questions about Dan and Katie's relationship. Meanwhile, Katie decides to invite Jack to be her date for the gala.
Dan is on a family outing and finds himself alone with Zack when he feels a strong headache coming on, inadvertantly abandoning his son in a crowded public place.
Dan's latest journey sends him to help two brothers scarred by their father's abuse. Jack begins to suspect that Dan has fallen back into his old gambling habits. During a trip to the past, Dan and Livia overhear an intimate conversation between Jack and Katie. Meanwhile, Dan learns a lesson about brotherly love.
Much to Dan's dislike, Katie considers going back to work as a television journalist. Dan travels back in time to protect a witness from certain death. Livia arrives just in time to save Dan's future. Meanwhile, Jack continues to investigate his brother’s mysterious behavior.
Dan journeys back into the past to a "key party" where he meets a young hippie girl who gets involved in a deadly crime and he must get involved to save her from herself. Katie makes an interesting discovery about Livia's past. Dan and Jack get into a fight over an investigation involving Dan.
Dan travels back to the early 90's where he seems to be tracking a serial kidnapper but Livia insists that his true mission is with the victim, not the criminal.
The dangerous kidnapper Aeden Bennett is back and shoots Dan in his kitchen. Dan learns a difficult lesson about what happens when he goes off-mission. Wounded, he narrowly escapes as he travels back to 1983 and discovers a young, abused Aeden, a killer in the making. Livia continues to uncover secrets about her purpose in life. Meanwhile, Katie gets into a deadly predicament when the kidnapper seeks revenge and becomes his captive.
Layoffs hit Dan's office on Christmas Eve and he is forced to travel back in time to save the newspaper. At home, Katie tries to enjoy the holidays but struggles to get her traumatizing experience out of her head. While Dan is traveling he discovers a new secret about Livia. Meanwhile, Jack and Theresa get some unexpected news.
Dan's travels take him into an RV hanging off of a cliff just in time to try and save a mother and son. Katie's sister comes to visit and suspects Dan needs help. When he returns home, Dan frantically searches for Zack and realizes how big the consequences can be when he accidentally leaves things in the past.
Dan travels a few months into the past to discover a man named Evan who claims he too is a time traveler. Livia travels to the present right before her wedding in the past is supposed to take place.