Simplify the following text for a Grade 6 native English-speaking person.
Original: At No Mercy , Orton was awarded the WWE Championship by Mr. McMahon after Cena was stripped of the title due to an injury the previous week , which also ended the Orton-Cena storyline prematurely .
Simplified: At No Mercy Mr. McMahon awarded Orton the WWE Title as Cena was injured the previous week .