Han Yang, who had infinite longing for military uniforms and the ocean, failed again after three years of examination in the Navy. Under the persuasion of his relatives, he had to settle for the second best, boarded a newly opened international cruise ship, and became a sea waiter. The colleagues on the ship came from all over the world, each with their own thoughts and past events. With the storm and waves and each other's company, their future is like the sea and the future is long. But many years later, some accidents made this cruise ship a past event that no one wants to recall.