Maia and Diana visit a local family court so that Diana can adopt Maia legally, the judge remarks “that you two had to look clear across time to find each other” and he introduces them to each other in their new roles, mother and daughter. Tom is no longer assigned to any 4400 cases due to the events of the last episode.
Kyle begins to get sick of all the tests that are being run on him to determine if he is really alone in there.
In a psychiatric hospital a 4400 (Tess Doerner) and a man talk. She tells him that she will be leaving soon, very soon. Several of the residents are building something, something the orderlies want them to stop building.
Shawn is having a massage when Jordan interrupts. A book Jordan has written will be released the next day entitled Forty-Four Hundred and Counting. In the past 6 months Nina Jarvis has replaced Dennis Ryland as head of NTAC.
Richard tries to persuade Lily to stay where they are as they hadn’t been singled out. Maia and Diana have a party and Maia calls Diana "mommy" for the first time. Tom is reassigned to begin investigating the 4400s again, and his first job is to investigate Tess Doerner.
Kyle is allowed home, but misses his mother and decides to take up golf. Tom and Diana visit Tess to question her about her super-structure; she tells them it is to be used to contact the future.
Jordan Collier has a seizure which Shawn must stop. Shawn remarks that they are becoming more frequent. Jordan’s book is released to the public containing classified information which was leaked from someone in NTAC. Collier claims that he can unlock the 4400 in everybody.
Kyle goes to the 4400 Center to see his cousin, Shawn. When he arrives one of the staff refuses to notify Shawn of Kyle’s arrival or even to tell him if Shawn is there. Policy prohibits it.
Diana and Tom return to the psychiatric hospital with Marco in tow and discover the staff has begun building the super-structure as well. Tom and Diana place the hospital under NTAC control and prohibit the staff from entering the courtyard to work on the structure. Diana and Tom decide the best way is to get Tess away, however Kevin attacks them, trying to protect her.
Shawn is angry at Collier after Kyle was chucked out and is distraught that Collier wants him to cut ties.
Lily and Isabelle are at a store when a local preacher demands all copies of Jordan’s book be removed. When the man discovers that Lily has a copy she intends to purchase he begins insulting her and Isabelle. However, Isabelle sends the store into chaos when windows begin smashing and items start flying around. Lily, Richard and Isabelle leave in a hurry with the preacher and his sons following.
Tom, Diana, Marco and Nina discuss the structure and what to do with it; Marco believes it really is a communication device. Nina notifies Tom and Diana that they are not to go near the hospital.
Maia returns home early from her sleepover when she is teased because she admits to having a crush on Frank Sinatra.
The preacher catches up with Richard, Lily and Isabelle. Richard speeds up but then a tire blows out, knocking them off the road and forcing them to walk in the forest.
Diana discovers that Maia has been keeping a diary, Marco and Diana speculate on the nature and contents of the diary. Richard, Lily and Isabelle have paused in the forest as Richard has hurt his leg. Tom decides to return to the hospital with Tess, and Diana decides to follow. Shawn and Kyle meet up for a chat.
Tom and Tess break the residents out of the hospital, Tess remarks that Kevin is a genius. While looking for food, Lily finds some unripe berries which mysteriously ripen when Lily tells Richard about them.
Richard decides to procure one of the hunters' guns to defend his family, and although he manages to get one, he is knocked out by the preacher.
Nina goes to the hospital with a squadron of armed men. Just as they manage to break the door down and cease any more activity at the structure Diana pushes up the power leaver. The structure then powers up and begins emitting sounds on a sonic level and then knocks everyone in the vicinity over.
Richard hears a gunshot and a scream from Lily. He disables his “guard” and runs to the scene. The preacher has killed his son under Isabelle's "devilish" influence. He then has a heart attack and dies. His son catches up and points his gun at the trio, however, when Isabelle looks at him, he points the gun at his throat and shoots himself.
Tess is still at the hospital after having started the device; the future did not take her. The only change is Kevin; he has begun speaking again after six years and can also think again. He feels better.
Marco reveals to Tom, Diana and Nina that Kevin is quite possibly the father of 4400 technology. The episode ends with Shawn about to heal, Kyle learning golf, Richard and Lily hitchhiking, and Diana reading Maia’s diary.