ROH/NJPW War of the Worlds (2018)

War of the Worlds Tour was a professional wrestling tour that was co-produced by Ring of Honor (ROH) and New Japan Pro-Wrestling (NJPW).

Background
In 2014, NJPW and ROH formally forged a relationship, which saw them present the first War of the Worlds show on May 17, 2014, at the Hammerstein Ballroom in New York City, New York. The following year, War of the Worlds was held over two days at the 2300 Arena in Philadelphia, Pennsylvania, and in 2016 it was expanded to a three-show tour with shows taking place in Dearborn, Michigan, Toronto, Ontario, and New York City. The 2017 War of the Worlds tour was held from May 7 to 14. In February 2018, NJPW and ROH announced War of the Worlds Tour, a four-show collaborative tour taking place in Lowell, Massachusetts, Toronto, Ontario, Royal Oak, Michigan, and Villa Park, Illinois.

Storylines
War of the Worlds Tour will feature professional wrestling matches that involve different wrestlers from pre-existing scripted feuds and storylines. Wrestlers will portray villains, heroes, or less distinguishable characters in the scripted events that will build tension and culminate in a wrestling match or a series of matches.