But Carter has other plans for his long-lost love.

The Flash-Arrowevent kicks off Tuesday, Dec. 1 at 8 p.m.

ET, and continues Wednesday, Dec. 2 at 8 p.m.

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Credit: Katie Yu/ The CW

ET on The CW.

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Cate Cameron/The CW

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Cate Cameron/The CW

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Cate Cameron/The CW

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Katie Yu/ The CW

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Arrow — “Legends of Yesterday” — Image AR408A_0302b.jpg — Pictured (L-R): Grant Gustin as Barry Allen, Carlos Valdes as Cisco Ramon, Stephen Amell as Oliver Queen, Willa Holland as Thea Queen, Katie Cassidy as Laurel Lance, David Ramsey as John Diggle, Falk Hentschel as Carter Hall and Ciara Renee as Kendra Saunders — Photo: — © 2015 The CW Network, LLC. All Rights Reserved.Katie Yu/ The CW

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Katie Yu/ The CW

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Katie Yu/ The CW

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PART TWO OF THE EPIC CROSSOVER WITH “THE FLASH” — Oliver (Stephen Amell) and Barry Allen (guest star Grant Gustin) take Kendra Saunders (guest star Ciara Renée) and Carter Hall (guest star Falk Henstchel) to a remote location to keep them hidden from Vandal Savage (guest star Casper Crump) while they figure out how to defeat him. Malcolm (John Barrowman) arranges a meeting between Vandal, Green Arrow and The Flash that doesn’t go as planned. Meanwhile, Felicity (Emily Bett Rickards), Thea (Willa Holland), Diggle (David Ramsey) and Laurel (Katie Cassidy) work with Team Flash to come up with a weapon powerful enough to destroy Vandal Savage. Thor Freudenthal directed the episode with story by Greg Berlanti & Marc Guggenheim and teleplay by Brian Ford Sullivan & Marc Guggenheim (#408). Original airdate 12/2/2015.Katie Yu/ The CW