Mood: The mood of the video appears to be light-hearted and playful, with a romantic undertone. The theme seems to revolve around love, relationships, and possibly marriage, given the title 'Tanu Weds Manu Returns'. The overall emotion exuded is joy and affection.

Environment: The setting seems to be a traditional Indian environment, possibly a wedding or a festive celebration. The presence of a temple or a decorated background with Indian motifs suggests a cultural or religious event. The attire of the individuals, including traditional Indian clothing and jewelry, further supports this inference.