When the episode begins a policeman finds a decaying corpse and then cut to pieces with an axe by the Salamanca brothers. Soon we cut to Walter and Skylar discussing about divorce, and Walt finds a new apartment where he can live alone at the moment. Hank will have the confirm that the RV is of Jesse when he sees Badger coming out of it, and if you followed the show you'd probably remember that Badger was previously arrested for drug dealing only to be freed by Saul Goodman. Walt starts working in his new underground lab and meets his new business partner Gale Boetticher. When Walter is called by Hank Walt then rushes to the RV's parking lot and ends up hiding in it along with Jesse. Walt then has an idea; calls Saul, makes his secretary pose as a police officer and telling Hank that Marie is involved in a car accident. Hank rushes to his wife while Walt and Jesse assist to the destruction of the RV. The Salamanca brothers have a meeting with Gus Fring and Gus says them that they shouldn't focus on Walter White but on Hank Schrader since he killed Tuco.
The RV part was very funny, thanks probably to the writing team, and the part at the end with the prank... that was really funny. Another winner in another great season.