'Paatal Lok' actor Shriidhar Dubey, will be seen playing the lead role of Alakh Pandey in the web series 'Physics Wallah'. The story revolves around a teacher and the difficulties he faced while making concept clear to students and the college authorities. He faced a lot of differences when he applied for the position of physics teacher at a coaching centre and was asked if he could make them understand the subject. He was told that knowing Physics and teaching it well are two different things. "Teaching is an art which you need to learn."

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Many of his friends advised him to be a good teacher and finally he decided to take online classes rather than confining himself to a coaching centre. The plot moves on with how he makes teaching interesting and his online classes start becoming popular and those who question his teaching skills ask him to join them. He emerges as Edtech Guru. It is a story of his struggle and failure as a teacher and then becoming popular and making people understand what it means to be a teacher and what effective teaching methods are.