Meg meets up with Theo, the other person who traveled through dimensions with her. They follow Paul, the man who killed Meg's dad, to a technology conference
Theo and Meg continue to follow Paul out of the conference and to the subway where Paul realizes what is going on. Theo punches Paul, who then gets on the next train followed by Meg, but not Theo. Meg confronts Paul, but he had no clue of her father's death.
To escape Paul jumps to another dimension, Theo and Meg follow. Here Meg is a Russian princess and Paul is her bodyguard. Both Meg and Paul lose the devices that allow them to travel between dimensions. Meg's dad fixes them, Paul jumps again, Meg and Theo follow him once again.
Paul, Theo, and Meg find themselves in a dimension almost identical to their own. Paul is in hiding after destroying Meg's parents research, upsetting their funder. Paul leaks the truth about the funder to Meg. Her parents research funder is none other than Wyatt Conley, the biggest technological innovator in every dimension, so far.
Paul sends them all to a dimension under water, and proves that Meg's dad is trapped there with no way of escaping. Theo finally realizes that Paul was right. Theo turns out to be a spy for Wyatt Conley, and he has been this spy for three months, meaning that he truly killed Meg's dad. Meg steals Theo's dimension traveling device and leaves the traitor in the dimension left to trap her father. Paul, Meg, the non spying Theo, and Meg's dad return home safely.