Mood: The mood of the video appears to be romantic and adventurous, with a sense of excitement and anticipation. The theme seems to revolve around a new experience or encounter, possibly a first meeting or a journey together, as hinted by the title 'Pehli Baar' which translates to 'first time' in English.

Environment: The setting of the video seems to be a mountainous region, possibly the Himalayas, with rugged terrain and a serene natural backdrop. The presence of backpacks and the attire of the individuals suggest that they might be on a trek or a travel adventure.