"George Byron Brummel," portrayed by John Barrymore, is a soldier whose military contributions are not particularly noteworthy. He finds himself drawn to "Lady Margery" (Mary Astor), and while she returns his feelings somewhat, she isn’t willing to forgo her social standing for marriage; instead, she marries "Lord Alvanley" (William Humphrey) and leaves him to lead a rather dissolute life. The most effective approach to achieving success with minimal effort is to align oneself with someone even more adept at it, so he arranges an encounter with the Prince of Wales (Willard Louis), and they quickly become close friends. "George"—now commonly known as "Beau"—begins holding court in a lavish display of his own making. Over time, he accumulates enemies within the royal circle and starts to push his luck too far. He accrues debts and engages in numerous affairs until his royal benefactor grows weary of him. Following an impulsive remark directed at the Prince, "Beau" is cast off to his creditors. This forces him to seek refuge in France, but it's evident that his situation is deteriorating, and he increasingly depends on the faithfulness of his manservant, "Mortimer" (Alec B. Francis), and the generosity of a few remaining friends back home. A possible reunion appears feasible when King George III visits France, but pride and bitterness prevent this from happening, ultimately condemning the aging "Beau" to a decline that is far from graceful. Harry Beaumont allows the drama to unfold at a measured pace, which aids in developing the complex personality of “Brummel.” Barrymore’s performance reveals ambition and superficiality, yet also shrewdness and an unusual form of loyalty and compassion as he matures. Astor also delivers a commendable performance—she brings a blend of stoicism and emotion to her character. However, I felt that Louis occasionally exaggerated the Prince's reputation for being a dandy. The two men still create a compelling dynamic when they are at their most flamboyant. There’s also a strong supporting cast who effectively portray the extravagance of the court and the stark poverty experienced by those who enthusiastically supported it. The final twenty minutes are particularly moving, with well-executed special effects transporting both the characters and the audience to another realm. As is typical with lengthy silent films, one must appreciate the musicians who interpret the film’s nuances and provide a skillful accompaniment; here, there's considerable artistry from the set designer and costumer as well in this story about facing the consequences of one's actions.

Source on TMDB