"Crash Landing" is the Tholian Temporal Cold War episode and according to the new information, will have Archer and crew attempting to keep a recovered vessel from the future from getting in the hands of either the Suliban or the Tholians, both laying claim to it. Archer and T'Pol use Crewman Daniels' database device to determine that the ship is from 900 years in the future and Trip and Reed set to work on the technology, but get caught in a time loop phenomenon.

Archer plans to deliver the alien vessel to a Vulcan cruiser but when the Enterprise arrives, it has been disabled by the Tholians, who then engage in a fire fight with the Suliban while Archer is impeded by the time loop--a sort of temporal radiation hinted at by the Tholians--in trying to destroy the future ship. In the clutch moment, Trip and Reed activate a piece of future tech, which transports the alien vessel back to the future and both the Suliban and Tholians depart empty-handed.

As for "Canamar," SFX spoils the end of the episode, which finds Archer and Trip wrongly aboard an Enolian prison transport that is hijacked by the inmates before the Starfleeters can be rescued. Archer and Trip pose as prisoners to gain the confidence of the leader, 'Kuroda', and then the Enterprise must track down the ship before the Enolians are forced to destroy it.

Enterprise mounts a surprise attack on the transport to rescue its crewmembers but Archer must fight Kuroda as the transport descends into an alien atmosphere. Archer finally escapes and Kuroda opts to go down with the ship rather than return to prison.

You can get more information here.