Percy Jackson, Adopted by 3????

Percy Jackson was just a seven year old kid when the abuse had happened from his step dad and soon later it all disappeared thanks to three gods.. who are they, you might ask, read and find out..
sorry I suck at descriptions but this is my first story so bare with me.
Also disclaimer for the whole book, I do not own the character only uncle Rick Riordan does but the plot is entirely mine however.