Summit Entertainment has released the trailer for "The Twilight Saga: Eclipse."

The sequel follows Bella Swan (Stewart) as she once again finds herself surrounded by danger. In the midst of it all, she is forced to choose between her love for Edward and her friendship with Jacob Black (Lautner) -- knowing that her decision has the potential to ignite the ageless struggle between vampire and werewolf.

"Eclipse" hits theaters June 30. It was directed by David Slade ("30 Days of Night," "Hard Candy") and was written Melissa Rosenberg.

Summit Entertainment is planning to turn the fourth installment -- based on Stephenie Meyer's last book -- into two films.

Check out the trailer below: