Mood: The mood of the video appears to be quirky and humorous, with a touch of eeriness. The presence of skeletons and the title 'STEP COPY' suggests a lighthearted and comedic tone. The overall theme seems to be related to dance or movement, with a possible focus on imitation or replication.

Environment: The setting of the video appears to be a dimly lit room or stage with a red curtain in the background, which could be a theatrical or performance setting. The presence of skeletons on either side of the main character suggests a possible connection to a medical or educational context, but the overall atmosphere seems more playful than serious.