Please write the summary of the novel "Robinson Crusoe" in concise language.

The Englishman Robinson Crusoe was shipwrecked and drifted to a desert island. With hard work and tenacity, he tenaciously fought against all kinds of difficulties. Brave, he rescued a savage from the cannibals and named him "Friday". The two lived happily on a desert island. After 28 years, he boarded a merchant ship and returned to his hometown of England.