There's an earthquake, the angel of the Lord descends from Heaven, rolls back the stone, sits on it, and the keepers are terrified and become like dead men.( Matthew 28:2-4)
On their way the women wonder who'll roll away the stone( Mark 16:3) When they arrive they see that the stone is rolled away(Mark 16:4, Luke 24:2) and then enter into the sepulchre. They don't see CHrist's body( Luke 24:3)
When Mary Magdalene sees the stone is rolled away from the sepulchre and Christ's body is gone she runs to find Simon Peter and the other disciple whom Jesus loved. SHe says, "WE don't know where they have laid him(John 20:1-2) [We is emphasized b/c if she'd been alone(as John seems to suggest) she wouldn't have used a term that means more than one person.]
Meanwhile the other women are perplexed( Luek 24:4) Two angels stand by them and tell them what's happened.( Luke 24:4-7, Matthew 28:5-7, Mark 16:6-7)[ In the accounts of Matthew and Mark it mentions only one angel. That doesn't mean there weren't two however, and all the passages suggest the angels were inside the sepulchre.]
The women flee quickly and are trembling and amazed( Mark 16:8, Matthew 28:8, Luke 24:9.) However they're afraid and don't say anything to any man( Mark 16:8)
Peter and the other disciple(who Mary went to) arrive at the sepulchre and go inside and see Christ's body is gone(John 20:3-9) After they see it they both go to their home(John 20:10)
Mary stands at the Sepulchre weeping and she sees two angels in white(John 20:11-13) She sees Jesus(John 20:14-16) He tells her to go to his brethren(John 20:17)
The other women, still afraid(Mark 16:18) have Jesus meet up with them and he tells them to, "be not afraid" and to tell his brethren to go into Galilee where they'll see him.(Matthew 28:9-10)
The women obey( Luke 24:9) and they and Mary Magdalene tell the disciples(Luke 24:10)
[Some think that the women NEVER told anyone but we can see from te other accounts that's simply not true. Jesus even knew they were afraid. That's why he told them to, "Be not afraid."]
Also we know Mary couldn't have been with the other women the whole time b/c the bible says Jesus appeared to her first( Mark 16:9)