While still reeling from a breakup, Vincent receives a cube with extraordinary powers and seizes a chance to reconnect with his ex -- in the past.

In therapy, Vincent retraces the end of his relationship with Louise. Later, his neighbor André makes a startling confession.

Amid the growing demands of his double life and visits from the desperate delivery driver, Vincent receives a chilling piece of news.

After waking up in the hospital, Vincent races home to check on the cube. With help from Clément, he makes one last bid to change the course of fate.