Short answers, pulled from the story.
Francis II of France was born on the 19th of January 1544 to Henry II and Catherine de' Medici. He was the eleventh child of the couple and arrived after a long delay that historians suggest resulted from his father's public repudiation of his wife in favor of his mistress, Diane de Poitiers.
Francis II of France inherited the throne on the 10th of July 1559 after his father died in a jousting accident, but he delegated power to his wife's uncles, the House of Guise. The House of Guise, led by Francis, Duke of Guise, and Charles, Cardinal of Lorraine, transformed the French court into a dictatorship of their own making within days of the new king's accession.
The Amboise conspiracy was a plot by religious Protestants and military men to seize the king and install Antoine of Navarre as regent. The plot was revealed on the 12th of February, and the court struck in March to arrest conspirators, resulting in many executions and hangings from the battlements as a warning.
Francis II of France signed the Treaty of Edinburgh on the 6th of July 1560 to end French occupation of Scotland and force the withdrawal of French troops. The treaty was signed after the English fleet blockaded the port of Leith and 6000 soldiers and 3000 horsemen arrived to begin the siege of the city.
Francis II of France died on the 5th of December 1560 in Orléans, Loiret, from an ear condition that has been identified as mastoiditis, meningitis, or otitis exacerbated into an abscess. He died childless, so his younger brother Charles, then ten years old, succeeded him.