Abstract: This paper shows a two-week internship report of medical learner in first year undergraduate course. It introduces what medical learner participated the medical professional engagement; how they observed daily clinical working environment in hospital. Also, the transformation of medical learner has been shaping base on these comprehensive experience, not only professional behaviors, but also psychological maturity. The discussion about how a short period time of internship would be able to create a life-long impact to the first-year medical undergraduate.