In 1898, isolated in the backlands of Alagoas, mother and son welcome an unknown and injured man into their home, an event that changes the course of their lives.

Miguel and his friend build what could be the first time machine. The device is designed to send a small object a few minutes into the future—but before the final test, another object unexpectedly arrives from the future. The two young scientists disagree and must face the dilemma of whether to send the artifact back or keep it in the present, in order to prevent a quantum and personal catastrophe.