The Flash – Pada satu acara peluncuran akselerator partikel baru oleh S.T.A.R Labs, tiba-tiba terjadi masalah dan meledak. Barry masuk menjadi korban atas ledakan tersebut. Dia koma selama kurang lebih sembilan bulan. Ketika tersadar, Barry ada di S.T.A.R Labs berada dalam perawatan dan pengawasan Harrison Wells (Tom Cavanagh)dan asistennya Dr. Caitlin Snow (Danielle Panabaker) serta Cisco Ramon (Carlos Valdes).

Tidak lama Barry mulai menyadari kekuatannya. Dia dapat bergerak dengan kecepatan luar biasa. Kemudian diketahui bahwa ada banyak metahuman lain yang tercipta akibat ledakan di waktu itu. Salah satunya adalah Clyde Mardon (Chad Rook), seorang perampok bank yang memiliki kemampuan mengendalikan cuaca.

Sinopsis from TMDB
After a particle accelerator causes a freak storm, CSI Investigator Barry Allen is struck by lightning and falls into a coma. Months later he awakens with the power of super speed, granting him the ability to move through Central City like an unseen guardian angel. Though initially excited by his newfound powers, Barry is shocked to discover he is not the only “meta-human” who was created in the wake of the accelerator explosion — and not everyone is using their new powers for good. Barry partners with S.T.A.R. Labs and dedicates his life to protect the innocent. For now, only a few close friends and associates know that Barry is literally the fastest man alive, but it won’t be long before the world learns what Barry Allen has become…The Flash.