Watch Sync for Free: How to Stream the Movie Online at 123Movies. . Iris and Kimberly, two close friends from Brabant, share a passion: synchronised swimming. They have been a duo for so long that their whole lives seem to run synchronously. When the day of the big event dawns, both their talent and their friendship are put to the test. Are they both motivated enough to maintain perfection? Is their friendship really as harmonious as they think?