Who, What and When are We?

Bob Farmer has hit the jackpot. In a flash, he got a highly-paid position with a prestigious research company and found a new, beautiful and incredibly sensual girlfriend, Zara. Bob's life suddenly seemed too good to be true. As it turns out – it was.When a rift in the space-time continuum opened, they go on a sex adventure of a lifetime – first time anal sex, oral sex, sex with aliens, MMF threes...