When Mila turns 16, she has a strong discussion with her mother, Elis, which is interrupted by the arrival of The Operator. Elis gives Mila her peculiar birthday present: a device that allows her to travel through the multiverse.

Mila finds Pierre, someone she knows from her own Universe. She also finds different versions of old friends such as Juliana and Vinícius. In order to go back to normal, Mila has to recover a key element.

The plan to get back their things works but Mila and Juliana become momentarily trapped and discover that Veronica has been kidnapped. Mila finally manages to talk to Elis, who tells her that she is in danger in this universe, and must return home.

Mila is forced to tell Juliana and Vinícius that she doesn't belong in that universe and her mother is in danger. Mila, Pierre, Vinícius, Juliana find the hiding spot of The Operators and discover the true intentions of that dangerous group.

The group of friends is shocked by what they hear: the whole universe is in danger. Without losing her cool, Mila heads the group and asks for help. Although Elis is in danger, she tells them to flee to the Copper Tunnel.

While Mila, Pierre, and Juliana are asleep, Vinícius finds the Copper Tunnel, but he cannot find the door to access it. Mila thinks that Mila II, from that Universe, might know where the door is and asks Pierre to establish communication.