Ben's diary

This is an English exercise. I have to edit a diary of a guy named Ben:

Dear Diary,
I had a terrible day yesterday. Tom and I called Magnus Erickson's number and his granddaughter, who was called Rose, answered back. We went to Magnus' home. I told her my story. Rose told us that she had never heard of a case like that, but that she could take us to the magic room. I saw a black cabinet. I thought that if I entered the cabinet I would return to my world. But I finished at a giant spider's web, and an enormous spider was creeping towards me. But then Legolas came out of the cabinet and killed the spider. Then Legolas brought the spider to life, but in a little size. Then he gave us elfic bread and we go all to bead.