Fleance accompanies his father on the night of Macbeth's murder of King Duncan, but he is able to escape unharmed. He is later seen in Act 3, Scene 3, when Macbeth visits the Witches again and is shown a vision of Banquo's ghost. The Witches warn Macbeth that he must beware of Fleance, as he will one day avenge his father's murder.
Fleance goes into hiding, and he is not seen again until the final scene of the play, when he appears with the English forces that have come to dethrone Macbeth. Macbeth is defeated and killed, and Fleance is left as the sole survivor of the Macbeth family. He is likely to become the next King of Scotland.
Despite his limited role in the play, Fleance is an important character because he represents the hope of the future. He is the only character who is able to escape Macbeth's wrath, and he is destined to fulfill the prophesy of the Witches and become King. Fleance also serves as a contrast to Macbeth, who is consumed by his ambition and lust for power. Fleance is a reminder that there are still good people in the world, even in the midst of darkness and chaos.