The united Xros Heart and Blue Flare armies team up with the Dust Zone Rebellion Force to distract/defeat Dark-Knightmon's army and free the Zone from his reign.
Episode 29's opening sequence is simply Three Minutes of Xros Heart being awesome, set to "Never Give Up."
Act 2 (Acts 1 and 2)
Victory King: Time Seven's debut. A wailing down upon an Eldritch Abomination can't get more epic when it's set to We Are Xros Heart! (Ver. X7).
The finale itself is set to the Cascade theme from the End of Act 5 from Homestuck, only ending instead with a triumphant "We are Xros Heart!"