As widely expected, The CW has officially picked up the spinoff of its hits "Arrow" and "The Flash," and revealed its title: "Legends of Tomorrow."

Here's the official plot synopsis of the latest DC Comics-based TV series, with a full title of "DC's Legends of Tomorrow":

DC'S LEGENDS OF TOMORROW

When heroes alone are not enough... the world needs legends. Having seen the future, one he will desperately try to prevent from happening, time-traveling rogue Rip Hunter is tasked with assembling a disparate group of both heroes and villains to confront an unstoppable threat - one in which not only is the planet at stake, but all of time itself. Can this ragtag team defeat an immortal threat unlike anything they have ever known?

DC'S LEGENDS OF TOMORROW stars Victor Garber ("The Flash," "Alias"); Brandon Routh ("Arrow," "Superman Returns"); Arthur Darvill ("Doctor Who"); Caity Lotz ("Arrow"); Ciarra Renee ("Pippin"); Franz Drameh ("Edge of Tomorrow"); with Dominic Purcell ("The Flash," "Prison Break"); and Wentworth Miller ("The Flash," "Prison Break"). Based on the characters from DC Comics, DC'S LEGENDS OF TOMORROW is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti ("The Flash," upcoming "Pan"), Marc Guggenheim ("Eli Stone," "Percy Jackson: Sea of Monsters"), Andrew Kreisberg ("The Flash," "Eli Stone," "Warehouse 13") and Sarah Schechter ("The Flash," upcoming "Pan").

It's not yet known when the show will premiere -- early reporting cited it as likely debuting midseason. As pointed out by The Hollywood Reporter, "Legends of Tomorrow" was picked up "sight unseen," as a pilot has not been produced. A trailer, specifically produced for The CW's upfront presentation, is expected to debut next week.

This makes for four DC-based shows on The CW's 2015-2016 lineup, with "Arrow," "The Flash" and "Legends of Tomorrow" joining "iZombie," announced Wednesday as renewed for a second season. Deadline reported earlier today that "Lucifer" -- like "iZombie," based on a comic that was part of DC's mature readers imprint, Vertigo -- is likely for a series order at Fox, and "Gotham" has already been renewed for its second season, also on Fox. "Supergirl," which also has Berlanti, Kreisberg and Schechter as executive producers, is a go for the coming season on CBS. The fate of NBC's "Constantine," which wrapped its first season earlier this year, is not yet clear.