Little differences between the first two books of the 'Heroes of Olympus' series by Rick Riordan. Even things to look for in 'The Mark of Athena'. I own nothing all credit goes to Rick Riordan.
Everyone at Camp Half blood and Camp Jupiter believe Leo is dead. However, Leo is very much alive. He just reunited with Calypso, the most beautiful deity he's ever seen. Now Leo and Calypso must make their way back from Ogygia to Camp Half-Blood. It seems like an impossible task, trekking over 1,000 miles on a ricket...