The end-of-year celebration at a house in Auburn in Sydney's west has been shut down. The teen, from a Catholic school on the north shore, is eager for a lift home after several hours' drinking.

A car, with a man in his 30s behind the wheel, pulls up beside her and sparks up conversation.

The teen will later tell police the next thing she recalls is being in the passenger seat of his car and feeling the overwhelming effects of alcohol as they weaved through the streets of western Sydney.

It was the beginning of a nightmare 24 hours for the school student, who was allegedly kept captive, sexually assaulted repeatedly by three men and forced to smoke drugs.

The scale of the allegations can be revealed after a statement of facts was tendered in Penrith Local Court, where the accused, Ali Imrak, 37, and Ruhi Dagdanasar, 45, made a failed attempt for bail last week.

Another man involved in the alleged sex attack hasn't been identified.

Four separate videos showing the alleged sexual assaults at a house in Glenwood were played during the bail hearing with the crown alleging the victim was so intoxicated she was incapable of giving consent.

According to the fact sheet, after getting into the man's car outside the after party, the victim was driven to a two-storey house where Imrak and Dagdanasar were.

Feeling uneasy, the teen sent her friend a text stating "can you come and get me. I am scared. I am at these weird druggo guys house".

She was allegedly pressured into drinking alcohol before Dagdanasar put a pipe up to her mouth and told her to smoke the white substance inside.

Over the next few hours she was allegedly sexually assaulted by three men despite being dizzy and unable to stand.

At one point, Dagdanasar allegedly commented that the victim was drooling and unable to lift her head while one of the other men was allegedly having sex with her.

She passed out and woke up to someone forcing her to have oral sex. The teen was allegedly led up to a bathroom and undressed while the unidentified man stood watching her, stating "you're so f---ing gorgeous".

The teen was allegedly made to have sex but "continued to fall over due to her level of intoxication", according to the facts.

"(The teen) yelled out in pain saying no," the court documents state.

"At this point the unknown accused moved away grabbed his clothes and said 'you're really fucking annoying me, you're so frustrating'."

When the teen moved down stairs she was assaulted again, with the men allegedly taking turns to have sex with her with Imrak remarking "you love it".

After a few hours, it was just the teen and Dagdanasar left at the house as the alleged victim started to feel the effects of alcohol wearing off.

It was 5pm on November 10 - hours after she was found sitting in the gutter - when the teen texted her sister: "I got raped, I am still here I need to leave".

Trying to remain calm, the girl convinced Dagdanasar to let her leave, according to the facts.

Walking her to the door, Dagdanasar let the teen outside, telling her: "You're always welcome back here babe."

In the rain in the middle of the night, the teen walked through the streets following directions from her sister on the phone until police met up with her.

The victim was left with bruising to her legs and knees and a tear to her tongue from the force of the assaults.

She told police she felt she had no choice but to be at the house and was forced to take drugs so she was in a limp state.

The court was closed while Dagdanasar and Imrak, charged with sex assault and deprivation of liberty, made bail applications last week but both were refused.

Outside court lawyer Elias Tabchouri said he had been instructed to defend the charges.