From the Team JB Hobbies website:

UFO Plate is a highly unconventional puzzle designed and produced by Andriy Bruns. At first glance, it appears to be a simple disc-shaped object—but hidden within is a mechanism that challenges the very assumptions most puzzlers rely on.

Unlike traditional puzzles that depend on visible movement, sound, or tactile feedback, UFO Plate is designed to operate outside those expectations. The goal is simple: open the puzzle. The challenge lies in discovering how.

This is a one-step solution puzzle, but finding that step is anything but obvious. With the included sticker left in place, the difficulty reaches an extreme level. Removing the sticker reveals subtle clues, making the puzzle more approachable while still engaging.

In addition to being a puzzle, the UFO Plate doubles as a hidden compartment, perfect for storing small items once opened.