Although susceptible to violent outbursts, bathroom supply business owner Barry Egan (Adam Sandler) is a timid and shy man by disposition, leading a lonely, uneventful life -- partly due to the constant berating he suffers from his seven sisters. However, several events transpire that shake up Egan's mundane existence, one of which is falling in love with one sister's co-worker, Lena Leonard (Emily Watson). But the romance is threatened when Egan falls victim to an extortionist.

An epic mosaic of many interrelated characters in search of happiness, forgiveness, and meaning in the San Fernando Valley.

In a California beach community, private detective Larry "Doc" Sportello (Joaquin Phoenix) tends to work his cases through a smoky haze of marijuana. One day, Shasta, a former lover, arrives out of the blue to plead for Doc's help; it seems that Shasta's current beau, rich real-estate tycoon Mickey Wolfmann, has a wife who may be plotting to commit him to a mental hospital. When Mickey and Shasta both disappear, Doc navigates a psychedelic world of surfers, stoners and cops to solve the case.

Washed-up revolutionary Bob exists in a state of stoned paranoia, surviving off-grid with his spirited, self-reliant daughter, Willa. When his evil nemesis resurfaces after 16 years and she goes missing, the former radical scrambles to find her, father and daughter both battling the consequences of his past.

Ruthless silver miner, turned oil prospector, Daniel Plainview moves to oil-rich California. Using his adopted son HW to project a trustworthy, family-man image, Plainview cons local landowners into selling him their valuable properties for a pittance. However, local preacher Eli Sunday suspects Plainviews motives and intentions, starting a slow-burning feud that threatens both their lives.
 

Freddie Quell (Joaquin Phoenix) is a troubled, boozy drifter struggling with the trauma of World War II and whatever inner demons ruled his life before that. On a fateful night in 1950, Freddie boards a passing boat and meets Lancaster Dodd (Philip Seymour Hoffman), the charismatic leader of a religious movement called the Cause. Freddie tries hard to adhere to Dodd's weird teachings and forms a close bond with his mentor, even as other members of Dodd's inner circle see him as a threat.

Veteran gambler Sydney befriends a young man named John, transforming into a Las Vegas casino champion. John falls for a prostitute, and the couple soon finds themselves in need of Sydney's help.