Which Shakespeare story with character ID 324 has description of 'this friend of Caesar'?
SELECT T1.Title FROM works AS T1 INNER JOIN chapters AS T2 ON T1.id = T2.work_id INNER JOIN paragraphs AS T3 ON T2.id = T3.chapter_id INNER JOIN characters AS T4 ON T3.character_id = T4.id WHERE T2.id = '324' AND T2.Description = 'friend to Caesar'