Alana is 14 years old and living in the year 3000. Her guardian, Tulista is the first person to time travel. Silverthorne wants power and since he doesn't have it in the current time he decides to go back. After a struggle both Alana and Silverthorne end up on a course back in time to 1990. In 1990, Jenny has a fairly rough life of her own just dealing with each day. The capsule lands and Alana escapes just before it goes into a ditch taking Silverthorne with it and she runs for her life.

Waking up in the new time zone Alana is confused and tries to return to the capsule only to be stopped by a security guard. Without realising what she is doing she picks up some fruit off a stores display without paying for it. The store owner goes after her but gets away. Alana meets and confides in Jenny about where she is from. Jenny doesn't fully believe her but goes along with the story and follows Alana to where the time capsule was last only to find a bulldozer on the very spot!

An officer takes Jenny home after Alana once again takes off. She tries to tell her mother about Alana, but she doesn't believe her about Alana being a time-traveller. Sneaking out later that night Jenny and Alana re-group and Jenny takes Alana home with her to safety. But it's not easy for Alana to take like a normal teenager.

Irene makes Alana enrol in school causing a new set of problems for both girls to deal with. After eating an eclair for the first time and then Jenny's she makes herself sick in science class. Meanwhile Petey has been into Alana's things and taken off with her transducer. While Jenny is busy telling Petey that Alana is a timetraveller, Alana is pulled into a car by Silverthorne.

Chasing the limo on her bike Jenny finally reaches Alana when the car stops and the two escape together from Silverthorne. Back home and things are no better as Mr Rooney (the science teacher) is asking questions about Alana. Later on the next day and Alana and Jenny have good news. The capsule isn't buried. They know this because Alana earlier took a piece of paper from Silverthorn, so she can still home...

Once again in Mr Rooney's class the girls draw a little attention as they hack into the police database with the help of PJ to find out who the car is registered to. They find out the information and discover that it is Silverthorne. The girls are almost caught as they snoop around but escape and go home. Home to where Mr Rooney is staying for tea.

The girls stake-out Silverthorne but on the first day Jenny loses him. It's Petey who comes up with a new idea while they are putting junk into their shed. So the plan is set and this time when Silverthorne drives off, attached to the back of his car is a dripping can of paint. Through a series of events Alana finds the time capsule hidden in Silverthorne's house. She asks it to send her home, but she's stuck there for another 13 days.

Petey manages to create a distraction allowing the girls to once again escape from Silverthorn. Back home, Jenny's mother Irene is getting set to go out with...you guessed it...Mr James Rooney. While the girls go about telling Irene about the capsule, James turns up and she decides to tell him to truth about Alana. James has the idea to do a news story on the show 'Newsprobe'. Annoyed at the interview Alana does Silverthorn breaks in and steals the transducer.

The news story back fires when Alana goes to do a second interview and the transducer doesn't work. Now the welfare turns up to investigate having found no record of Alana, and they take custody of her. Silverthorn has no success with the transducer and sends one of his men to find Alana. He does and with a few fake certificates gets custody of Alana.

Alana manages to heal Silverthorn's brain tumour and he promises to send her home. Only instead he creates a force field around the capsule so Alana can't get to it, making it impossible for her to get home. Meanwhile, James, Irene and Jenny set about trying to work out how they can rescue Alana and get her home safely.

Jenny keeps replaying the message Alana left for her on PJ. Both Irene and Jenny get James to take the day off teaching in order to help them find and rescue Alana. They manage to rescue her and get the time capsule. But Silverthorn vows he'll get it back.

Finally Alana can go home. The capsule is in the garage and everyone is saying their goodbyes. And then Silverthorn turns up and Irene tries to stall him as best as possible. After a struggle and explosion Jenny is injured and Alana must take her and Silverthorn back to 3000 in order for her to be healed.