Lu Ban, the father of carpentry of China, lived in the Warring States Period more than two thousand years ago. During his travel through the land, he has solved many architectural problems and befriends a young builder. Under the guidance of Lu, the young man slowly turns from an arrogant and imprudent builder into a responsible craftsman able to take on a daunting task assigned by the king.

After graduating from maritime college, a group of girls arrive to undergo practical training on a ship and, as future navigators, are greeted in different ways.