Dreams involving travel, especially by plane, often symbolize transitions or significant changes in your life. Your feelings of fear and anxiety about the trip to Japan could represent your apprehension about facing new experiences or stepping outside your comfort zone.

The emergency stop you pressed could indicate a desire to halt progress or avoid a situation you find overwhelming. This may reflect feelings of inadequacy or being unprepared for changes in your waking life. The struggle to lift yourself back into your seat suggests a battle against these feelings, emphasizing the need for resilience and the effort it takes to regain control in challenging situations.

The scene with the deceased captain might symbolize a loss of guidance or authority in your life, causing you to feel insecure. The presence of the old man with a gun could represent an external threat or fear, but the calmness of others suggests that they may not share your anxiety, highlighting a sense of isolation in your feelings.

Overall, this dream points to a struggle with change, feelings of being unprepared, and a search for stability and security in uncertain situations. It may be worthwhile to reflect on any upcoming changes in your life and consider how you can prepare yourself emotionally and mentally for them.