YES, there is plastic on the inside. It is at the very top of the jug where the handle attaches. The handle only attaches at the inside top not the full length of the handle. I personally believe it is not safe. This is not the kettle I am looking for.
Based on that video reviews on Youtube, there is plastic inside. Regardless if water touches the plastic or not, the condensation from the steam will drip back down to the rest of the boiling water. This is the reason why A LOT of people now are asking for totally non-plastic material inside.