In this preview clip from "Forever Young," a school bus crash leaves many patients at Seattle Grace... one of whom Derek Shepherd and his resident understudies must do everything they can to treat (and keep calm).
[narrating] In some ways we grow up; we have families... we get married, divorced... but for the most part we still have the same problems that we did when we were fifteen. No matter how much we grow taller, grow older, we are still forever stumbling... forever wondering, forever... young.
[narrating] There comes a point in your life, when youâ€™re officially an adult. Suddenly, youâ€™re old enough to vote, drink and engage in other adult activities. Suddenly, people expect you to be responsible, serious, a grown-up. We get taller, we get older. But do we ever really grow up?