Hamlin, Hamlin & McGill, or HHM, is a successful law firm based in Albuquerque. It was started by Chuck McGill and the father of Howard Hamlin, with Howard himself later being promoted to name partner at the firm.
HHM was founded by Chuck McGill and the father of Howard Hamlin. In the 1990s, Chuck convinced his younger brother Jimmy to move to New Mexico to make a legitimate living while working in HHM's mail room. It was there that Jimmy met Kim Wexler.
When Jimmy earned a law degree from a shady diploma mill and passed the bar exam (after failing twice), he sought a job at HHM. However, Chuck -- alarmed at the idea of his brother, a former con artist, practicing law -- used Howard to block Jimmy's chances of advancement. Jimmy eventually left HHM and began a thankless career as a public defender.
Season 1 (Better Call Saul)
A year-and-a-half before the start of the series, Chuck took leave from HHM over his electromagnetic hypersensitivity. HHM gives him a weekly stipend of $26,000, which Jimmy feels is an attempt to cheat Chuck out of his rightful share. After Jimmy confronts Howard, HHM gives Chuck a new stipend of $857. Meanwhile, Jimmy fails to land Craig and Betsy Kettleman, a couple accused of embezzling county funds, as new clients. They subsequently turn to HHM.("Uno")
Jimmy later spends illicit money on a billboard advertisement which shares obvious visual similarities to HHM's brand, leading the firm to sue Jimmy for trademark infringement. When Jimmy is ordered to remove the billboard, he takes advantage of the situation by faking a situation in which he "rescues" the worker taking down the advertisement. Howard and Kim see through the ruse, but the incident gives Jimmy exposure in the local media and boosts his popularity.("Hero")
When the Kettlemans reject Kim's proposed plea deal and drop HHM, Jimmy learns that the firm has demoted her to document review, a.k.a. the "corn field," as punishment. To help Kim, Jimmy has an acquaintance, Mike Ehrmantraut, steal their ill-gotten money, to be delivered to the district attorney. Jimmy successfully pressures the Kettlemans into taking their case back to HHM and accepting Kim's proposal.("Bingo")
While soliciting elderly clients, Jimmy discovers that the Sandpiper Crossing nursing home is overcharging its residents. Jimmy takes his findings to Chuck, who agrees that Jimmy has built a solid case. Chuck is invigorated enough by the Sandpiper case to work through his electromagnetic hypersensitivity and return to HHM. However, Jimmy learns that HHM will handle the case themselves while he will be cut out in exchange for a finder's fee. Jimmy agrees to the deal when he discovers Chuck's role in holding him back when he worked at HHM.("RICO")("Pimento")
Season 2 (Better Call Saul)
Jimmy accepts a new job with the Santa Fe firm of Davis & Main, which is working with HHM in litigating the Sandpiper case. Chuck sits in and "bears witness" at a meeting between HHM and D&M as Jimmy discusses his clients.("Cobbler")
When Jimmy airs a sensationalistic TV commercial for D&M without their approval, the ripple effect is felt at HHM. Howard and Chuck punish Kim -- who had vouched for Jimmy -- by demoting her to document review for a second time. Feeling that Chuck is going after Kim as a tactic to force him into quitting law, Jimmy tries to convince Kim to sue HHM, which she declines. Chuck later allows for Kim to be reinstated, but she is still treated coldly by Howard.("Amarillo")("Gloves Off")("Rebecca")
Kim eventually resigns from HHM to launch twin solo firms with Jimmy and is hired by Mesa Verde Bank and Trust, developments which rattle Chuck. He manages to persuade Mesa Verde to stay with HHM at Kim's expense. To get back at Chuck, Jimmy copies his Mesa Verde files and forges incorrect addresses on the documents before HHM mails them to the state regulator. At a hearing, confusion over the address leads to a six-week delay in the opening of Mesa Verde's new branch. Mesa Verde fires HHM and returns to Kim.("Fifi")("Nailed")