All's Well That Ends Well

All's Well That Ends Well is a play by William Shakespeare. Though originally the play was classified as one of Shakespeare's comedies, the play is now considered by some critics to be one of his problem plays, so named because they cannot be neatly classified as tragedy or comedy. Helena, the low-born ward of a Spanish countess, is in love with the countess' son Bertram, who is indifferent to her.
Bertram goes to Paris to replace his late father as attendant to the ailing King of France. Helena, the daughter of a recently deceased doctor, follows Bertram, ostensibly to offer the King her services as a healer. The King is sceptical, and she guarantees the cure with her life: if he dies, she will be put to death, but if he lives, she may choose a husband from the court. The King is cured and Helena chooses Bertram, who rejects her, owing to her poverty and low status.
The King forces him to marry her, but after the ceremony Bertram immediately goes to war in Italy without so much as a goodbye kiss. He says that he will only marry her after she has borne his child and wears his family ring. In Italy, Bertram is a successful warrior and also a successful seducer of local virgins. Helena follows him to Italy, befriends Diana, a virgin with whom Bertram is infatuated, and they arrange for Helena to take Diana's place in bed.
Diana obtains Bertram's ring in exchange for one of Helena's. In this way Helena, without Bertram's knowledge, consummates their marriage and wears his ring. Helena returns to the Spanish countess, who is horrified at what her son has done, and claims Helena as her child in Bertram's place. Helena fakes her death, and Bertram, thinking he is free of her, comes home.