What is summary of lanval?

Lanval is a Breton lai by the anonymous poet Marie de France. The story chronicles the life of Lanval, a knight in the court of King Arthur. Lanval initially attracts the attention of the fairy queen, who invites him to her own dimension where she offers him riches and sexual favours. Upon his return to the mortal world, Lanval refuses to share the wealth. The queen feels betrayed and accuses Lanval of attempting to seduce her, and he is brought before King Arthur and his court. During his trial, Lanval falls into despair until the arrival of the fairy queen on a powerful horse, which amazes the assembly. She defends Lanval, retraces the events, and accuses Arthur and his court of being hypocritical and cowardly for rejecting Lanval. The queen leads Lanval and his horse to Avalon, where he remains under her protection and the promise that he may return to the mortal world when he is desired. The lai emphasizes the benefits of self-reliance and the temptation of temporary pleasures at the cost of permanent happiness.